A recent report stated that 17 of the U.S. population has blue eyes,.pdf

•

0 gostou•4 visualizações

A recent report stated that 17% of the U.S. population has blue eyes, assume that this claim is true. Suppose that a genetic researcher randomly selects 400 U.S. citizens and assume that the sample satisfies the conditions for the Central Limit Theorem. 7. What percent of the sample should have blue eyes (success)? 8. What percent of the sample should not have blue eyes (failure)? 9. Calculate the standard error for this sampling distribution. Leave answer in decimal form and round answer to 3 decimal places. 10. What is the probability that a sample of this size will contain more than 20% blue eyed people? 11. What is the probability that a sample of this size will contain less than 13% blue eyed people? 12. Suppose that a sample of this size contains 11% blue eyed people; is that unusual? Explai 13. Suppose the researcher resamples from the population, but the size of the sample is reduced to 200 people. What will happen to the standard error?.

Educação

Mais conteúdo relacionado

Semelhante a A recent report stated that 17 of the U.S. population has blue eyes,.pdf

Chapter 1 sections 6 through 9

maialangenberg

Top of Form 1. Some variables that were recorded while studying diets of sharks are given below. Which of the variables is categorical? The length of the shark being observed The type of shark being observed The amount of food eaten in a day by the shark being observed The age of the shark being observed 2. During winter, red foxes hunt small rodents by jumping into thick snow cover. Researchers report that a hunting trip lasts on average 19 minutes and involves on average 7 jumps. They also report that, surprisingly, 79% of all successful jumps are made in the northeast direction. Three variables are mentioned in this report. The first variable mentioned is quantitative and discrete. ordinal. quantitative and continuous. categorical. 3. Here is a stemplot of body temperature (in degrees Fahrenheit) for 65 healthy adult women. The number of women in the sample that have a body temperature lower than 98 degrees Fahrenheit is 15. 45. 20. 50. 4. Here is a histogram of the yearly number of unprovoked attacks by alligators on people in Florida over a 33-year period. What is the overall shape of the distribution? Roughly symmetric with an outlier Slightly skewed to the right Bimodal Strongly skewed to the left 5. A sample of 20 endangered species was obtained and the length of time (in months) since being placed on the list was recorded for each species. A stemplot of these data follows. In the stemplot, 5|2 represents 52 months. The first quartile of the length of time (in months) since being placed on the list for these 20 species is 74. 59.5. 75.5 5. 6. Here is a dotplot of migraine intensity (on a scale of 1 to 10) for 29 adults suffering from recurring migraines. The third quartile for this data set is 9.25. 10. 9.5. 9. 7. A maze experiment uses 24 lab rats of various ages, as summarized below. Age (in months) Number of rats 2 4 3 6 4 6 5 4 7 3 9 1 What is the median rat age (in months) for this maze experiment? 4 5 4.5 3.5 8. Geckos are lizards with specialized toe pads that enable them to easily climb all sorts of surfaces. A research team examined the adhesive properties of 7 Tokay geckos. Below are their toe-pad areas (in square centimeters, cm2). 5.6 4.9 6.0 5.1 5.5 5.1 7.5 Rounded to two decimal places, the mean toe pad area in this sample of geckos is _______ cm2. 9. By inspection, determine which of the following sets of numbers has the smallest standard deviation. 7, 8, 9, 10 5, 5, 5, 5 0, 0, 10, 10 0, 1, 2, 3 10. A researcher states that the survival time of an organism is negatively related to the amount of a specific pollutant present in the ecosystem. This means that above-average amounts of pollutant tend to accompany below-average survival times. below-average amounts of pollutant tend to accompany below-average survival times. below-average amounts of pollutant can be accompanied by either above- or below-average survival times. above-av ...

Top of Form1. Some variables that were recorded while studyi.docx

edwardmarivel

Higher Order Thinking Skills.pptx

Jonathan Lalrinmawia

40007 chapter8

nagaraj navalgund

Chapter8 introduction to hypothesis testing

BOmebratu

Hypothesis test

pallopathak

Hypothesis testing - Primer

Sreehari Menon CFSA, CAMS

Chapter 3 part2- Sampling Design

nszakir

Data gathering

Chie Pegollo

1. US Census statistics show that college graduates make more than $254,000 more intheir lifetime than non-college graduates. If you were to question the validity ofthis observation, what would be your basis for doing so? A. Definition of a college graduate B. Work lifestyles of the population C. Defining “lifetime” D. How the Census was taken 2. The average age in a sample of 190 students at City College is 22. As a result of this sample, it can be concluded that the average age of all the students at City College A. must be more than 22, since the population is always larger than the sample B. must be less than 22, since the sample is only a part of the population C. could not be 22 D. could be larger, smaller, or equal to 22 3. Since a sample is a subset of the population, the sample mean A. is always smaller than the mean of the population B. is always larger than the mean of the population C. must be equal to the mean of the population D. can be larger, smaller, or equal to the mean of the population Use the following situation for Questions 4-7. Michael, Inc., a manufacturer ofelectric defibrillators, is a firm that makes 50 types of electric defibrillators . Thetable below shows the price distribution of the defibrillators . Price (In $) Number of Defibrillators 100 – 130 8 140 - 170 12 180 - 210 20 220 - 250 10 TOTAL 761.22 Select from the following choices for Questions 4-7. Use letter only in the blank. A. 32 B. 50% C. 20 D. 30 E. 16% F. 10 G. 60% H. 50 4. How many defibrillators have a price of at least $180?__ D. _____ 5. What percentage of the defibrillators has a price of at least $180? ___%___ 6. What percentage of the defibrillators has a price of less than $140? ___ E. __ 7. How many defibrillators cost at least $140 but no more than $210? __ A. ____ 8. Temperature is an example ofa quantitative variable A. a qualitative variable B. a quantitative variable C. either a quantitative or qualitative variable D. neither a quantitative nor qualitative variable Use the following situation for Questions 9 and 10. The following frequency distribution shows the frequency of outbreaks of the11 virus (statistics flu) for the following households in a small rural community. Households 1134 406 168 41 25 12 : 1786 Outbreaks 0 1 2 3 4 5 9. Use the frequency distribution to construct a probability distribution by filling in the blanks below. x 0 1 2 3 4 5 P(x) P(0) = P(1) = P(2) = P(3) = P(4) = P(5) = 10. Compute the mean and the standard deviation and select from the following the appropriate interpretation of the results (select best response) A. A household on the average has 0.9 outbreaks with a standard deviation of.6 outbreaks B. A household on the average has 0.6 outbreaks with a standard deviation of12 outbreaks C. A household on the average has 0.9 outbreaks with a standard deviation of.9 outbreaks D. A household on the average has 0.6 outbreaks with a standard deviation of.9 outbreaks Use the following situ.

1. US Census statistics show that college graduates make more than $.docx

elliotkimberlee

Finished biopresentationforeal

imkablamo

I am James S. I am a Probability Homework Expert at statisticshomeworkhelper.com. I hold a Master's in Statistics, from Melbourne, Australia. I have been helping students with their homework for the past 8 years. I solved homework related to Probability . Visit statisticshomeworkhelper.com or email info@statisticshomeworkhelper.com.You can also call on +1 678 648 4277 for any assistance with Probability Homework.

Probability Homework Help

Statistics Homework Helper

Michael Festing - MedicReS World Congress 2011

MedicReS

Topic: Learning Team Number of Pages: 2 (Double Spaced) Number of sources: 1 Writing Style: APA Type of document: Essay Academic Level:Master Category: Psychology VIP Support: N/A Language Style: English (U.S.) Order Instructions: I will attach the instruction. On this paper please follow the instructions carefully. Thank you Correlation PSYCH/610 Version 2 1 University of Phoenix Material Correlation A researcher is interested in investigating the relationship between viewing time (in seconds) and ratings of aesthetic appreciation. Participants are asked to view a painting for as long as they like. Time (in seconds) is measured. After the viewing time, the researcher asks the participants to provide a ‘preference rating’ for the painting on a scale ranging from 1-10. Create a scatter plot depicting the following data: Viewing Time in Seconds Preference Rating 10 3 12 4 24 7 5 3 16 6 3 4 11 4 5 2 21 8 23 9 9 5 3 3 17 5 14 6 What does the scatter plot suggest about the relationship between viewing time and aesthetic preference? Is it accurate to state that longer viewing times are the result of greater preference for paintings? Explain. Submit your scatter plot and your answers to the questions to your instructor. LEARNING OBJECTIVES · Explain how researchers use inferential statistics to evaluate sample data. · Distinguish between the null hypothesis and the research hypothesis. · Discuss probability in statistical inference, including the meaning of statistical significance. · Describe the t test and explain the difference between one-tailed and two-tailed tests. · Describe the F test, including systematic variance and error variance. · Describe what a confidence interval tells you about your data. · Distinguish between Type I and Type II errors. · Discuss the factors that influence the probability of a Type II error. · Discuss the reasons a researcher may obtain nonsignificant results. · Define power of a statistical test. · Describe the criteria for selecting an appropriate statistical test. Page 267IN THE PREVIOUS CHAPTER, WE EXAMINED WAYS OF DESCRIBING THE RESULTS OF A STUDY USING DESCRIPTIVE STATISTICS AND A VARIETY OF GRAPHING TECHNIQUES.In addition to descriptive statistics, researchers use inferential statistics to draw more general conclusions about their data. In short, inferential statistics allow researchers to (a) assess just how confident they are that their results reflect what is true in the larger population and (b) assess the likelihood that their findings would still occur if their study was repeated over and over. In this chapter, we examine methods for doing so. SAMPLES AND POPULATIONS Inferential statistics are necessary because the results of a given study are based only on data obtained from a single sample of research participants. Researchers rarely, if ever, study entire populations; their findings are based on sample data. In addition to describing the sample data, we want to make statements ab.

Topic Learning TeamNumber of Pages 2 (Double Spaced)Num.docx

AASTHA76

Chapter 1 1. The term culture is typically used in everyday language to refer to all of the following EXCEPT: a. regular or expected behaviors of a particular group. b. different types of music, art, and dance. c. Food, clothing, history, and traditions. d. Genetic determinants of behavior. Why is that choice not used to describe culture? Question 2 of 8 2. “We know that when we are stressed, our immune system is weakened, and we are more likely to get sick.” This quotation illustrates which level of the Biopsychosocial model? a. Biological b. Cultural c. Social-Interpersonal d. Cognitive-Affective Explain why this is the best answer. Question 3 of 8 10.0 Points 3. Describe the five levels of the biopsychosocial model and how behavior is explained at each of these levels. Question 4 of 8 10.0 Points Chapter 2 4. Yolanda has her research participants rate how much they like two new soft drinks. Their ratings are on a scale from 1 to 10. She finds that most people rated an orange drink higher than a strawberry drink. Yolanda is using ________ data to come to conclusions about the drinks. a. quantitative b. qualitative c. nominal d. normal Why is this the best answer? Question 5 of 8 10.0 Points 5. Describe Hayes’ (1996) ADRESSING model. What factors does Hayes bring to the discussion of multicultural research that other models may overlook? Question 6 of 8 10.0 Points 6. “External validity” suggests that a. we can generalize our findings to broader populations. b. our changes in the experiment made a difference. c. changes in the experiment may have been influenced by events out of our control. d. external reviewers examined our results. Explain why you selected this choice. Question 7 of 8 10.0 Points Chapter 3 7. Suppose you are asked to do a project that requires you to work late in the library on campus. Or suppose you want to jog though the park at dusk. How does the worldview of the average female differ from the worldview of the typical male on matters such as these? Question 8 of 8 10.0 Points 8. Discuss how the gay, lesbian, or bisexual worldview differs from the straight (heterosexual) worldview. .

Chapter 1 1. The term culture is typically used in every.docx

TawnaDelatorrejs

Diagnosing Rare Disease infographic from Siren Interactive

Siren Interactive

Pratikppt

Parth Panchal

The Binocular Vision Dysfuction Pandemic

Dominick Maino

Null hypothesis for Single Sample Z Test

Ken Plummer

Insights from psychology on lack of reproducibility

Dorothy Bishop

Semelhante a A recent report stated that 17 of the U.S. population has blue eyes,.pdf (20)

Chapter 1 sections 6 through 9

Top of Form1. Some variables that were recorded while studyi.docx

Higher Order Thinking Skills.pptx

40007 chapter8

Chapter8 introduction to hypothesis testing

Hypothesis test

Hypothesis testing - Primer

Chapter 3 part2- Sampling Design

Data gathering

1. US Census statistics show that college graduates make more than $.docx

Finished biopresentationforeal

Probability Homework Help

Michael Festing - MedicReS World Congress 2011

Topic Learning TeamNumber of Pages 2 (Double Spaced)Num.docx

Chapter 1 1. The term culture is typically used in every.docx

Diagnosing Rare Disease infographic from Siren Interactive

Pratikppt

The Binocular Vision Dysfuction Pandemic

Null hypothesis for Single Sample Z Test

Insights from psychology on lack of reproducibility

Mais de amazonfashion

A small laboratory testing COVID-19 around Windhoek has kept a record of age category affected by COVID-19 for January 2022 and February 2022 and their corresponding frequency, summarized in the following summary table. 2.1 Find the average COVID-19 cases reported between January and February 2022 [5] 2.2 Find the value that split the cases into 50% [5] 2.3 Calculate how far COVID-19 cases are spread out from their average value [10] 2.4 Calculate the modal age categories [5] 2.5 Find the value that contains the first 75% of the COVID-19 cases [5].

A small laboratory testing COVID-19 around Windhoek has kept a record.pdf

amazonfashion

A random variable X follows a distribution with probability density.pdf

amazonfashion

A secure email system is expected to provide confidentiality, sender's non-repudiation, and message integrity. Alice uses three keys to achieve this goal. The three keys are Alice's private key ( KA), Bob's public key (KB+), and a randomly generated symmetric key (KS). The encryption procedure is shown below: How can Bob 1) decrypt the data, 2) verify the message's integrity, and 3) verify the sender's non-repudiation? Describe the detailed steps (including the formulas) and show your work..

A secure email system is expected to provide confidentiality, sender.pdf

amazonfashion

A secure email systery is expected to provide confidentiality, sender's non-repudiation, and message integrity. Alice uses three keys to achieve this goal. The three keys are Alice's private key (KA), Bob's public key (KB+), and a randomly generated symmetric key (KS). The encryption procedure is shown below: How can Bob 1) decrypt the data, 2) verify the message's integrity, and 3) verify the sender's nonrepudiation? Describe the detailed steps (including the formulas) and show your work..

A secure email systery is expected to provide confidentiality, sender.pdf

amazonfashion

A rough sketch of the distributions for the Good Health analysis is.pdf

amazonfashion

A risky asset has an expected return of 12 percent and a standard dev.pdf

amazonfashion

A researcher was interested in the exercise habits of the residents of the village of Pine Heights. She interviewed every 10 th person who left the post office until she had interviewed 100 people. Each of the people interviewed was asked to rate their exercise level according to the following scheme "(1) very little, (2) some, (3) moderate, (4) a lot, (5) extensive". The researcher reported that, on average, the residents of Pine Heights exercise moderately. What is the biggest flaw in the study? Participation bias Selection bias Measurement of the variable is not well defined Confounding variables The source of the study.

A researcher was interested in the exercise habits of the residents o.pdf

amazonfashion

A researcher for the EPA measured the amount of arsenic in the water .pdf

amazonfashion

A research company conducted a survey and collected demographic information on the respondents from each country. To the right is a table showing the number of people with various levels of education in five countries. Complete parts a) through e). a) If a respondent is selected at random, what's the probability that the person is from Country E and has done postgraduate study? (Round to three decimal places as needed.).

A research company conducted a survey and collected demographic infor.pdf

amazonfashion

Mais de amazonfashion (9)