1. Presentation a. Minimum of 2 minutes, maximum of 3 minutes b. No words on slides except a) first slide with names/topic b) identifying slides between subjects (example would be first name and type of facility for a caregiver before you present his/her perspective) and/or c) pause slide with correct word for a fill in the blank section on your outline c. All other slides must be pictures only (clip art, actual photos, link to video or audio file, etc) *****Example: http://www.pechakucha.org/faq, Examples: http://www.pechakucha.org/***** d. Maximum of 1 video/audio files per present allowed, clip cannot exceed 30 seconds e. Provide a fill in the blank outline, serves as pretest and post test f. Must reference throughout presentation the “fill in the blank” outline 2. Presentation’s paper: a. Maximum 4 pages (double space) minimum written summary of your presentation and the key information provided in presentation. The 4 pages does not include cover, Abstract or References pages. b. “Fill in the Blank” Outline (with answers) c. Copy of each team members’ written summary and presentation materials that were given to team leader (name required) 3. Handouts a. 25 fill in the blank outlines – answers to blanks can appear on slide/presentation at the end for class to see answers b. 1 printed hard copy of presentation for Professor, 6 slides per page 4. Paper Format: Must follow APA format to include cover page, running header, page numbers, Abstract page, Times New Roman 12 point font, 1” margins, appropriate Level 1 headings, double-spaced, References page. Essay(2 Paragraphs) What statistical concept/technique do you think will be the most helpful for you in your future? Please specifically identify and describe one concept or technique and explain how you think it will be helpful to you. Review 1. It appears that new car purchases have peaked in 2018 vs. used car purchases. The following probability distribution table shows the random variable x, where x is the number of new cars purchased by household during the last five years: x P(x) 0 0.15 1 0.25 2 0.45 3 0.14 4 0.01 a. What is the mean of x (round to 2 decimal places) b. What is the standard deviation of x 2. In a Sunday baseball league, Mike Kulansky had a 0.500 probability of hitting safely. Assume he had 8 bats in one game. a. Let X be the number of hits Mike got. The distribution of X is a binomial probability distribution. What is the number of trials (n), probability of successes (p) and probability of failures (q). b. Find the probability that he gets at least 5 hits in one game (round to 3 decimals) 3. Assume that gas mileage for cars is normally distributed with a mean of 25 miles per gallon and a standard deviation of 10 miles per gallon. a. What is the probability that a randomly selected car gets between 22 and 28 miles per gallon? (round to 4 decimals) b. Find the 90th percentile of the miles per gallon distribution (round to 2 decimals) 4. A.

1. 1. Presentation
a. Minimum of 2 minutes, maximum of 3 minutes
b. No words on slides except a) first slide with names/topic b)
identifying slides between subjects (example would be first
name and type of facility for a caregiver before you present
his/her perspective) and/or c) pause slide with correct word for
a fill in the blank section on your outline
c. All other slides must be pictures only (clip art, actual photos,
link to video or audio file, etc)
*****Example: http://www.pechakucha.org/faq,
Examples: http://www.pechakucha.org/*****
d. Maximum of 1 video/audio files per present allowed, clip
cannot exceed 30 seconds
e. Provide a fill in the blank outline, serves as pretest and post
test
f. Must reference throughout presentation the “fill in the blank”
outline
2. Presentation’s paper:
a. Maximum 4 pages (double space) minimum written summary
of your presentation and the key information provided in
presentation. The 4 pages does not include cover, Abstract or
References pages.
b. “Fill in the Blank” Outline (with answers)
c. Copy of each team members’ written summary and
presentation materials that were given to team leader (name
required)
3. Handouts
a. 25 fill in the blank outlines – answers to blanks can appear on
slide/presentation at the end for class to see answers
b. 1 printed hard copy of presentation for Professor, 6 slides per
page
4. Paper Format: Must follow APA format to include cover
page, running header, page numbers, Abstract page, Times New
Roman 12 point font, 1” margins, appropriate Level 1 headings,

2. double-spaced, References page.
Essay(2 Paragraphs)
What statistical concept/technique do you think will be the most
helpful for you in your future? Please specifically identify and
describe one concept or technique and explain how you think it
will be helpful to you.
Review
1. It appears that new car purchases have peaked in 2018 vs.
used car purchases. The following probability distribution
table shows the random variable x, where x is the number of
new cars purchased by household during the last five years:
x
P(x)
0
0.15
1
0.25
2
0.45
3
0.14
4
0.01
a. What is the mean of x (round to 2 decimal places)
b. What is the standard deviation of x
2. In a Sunday baseball league, Mike Kulansky had a 0.500
probability of hitting safely. Assume he had 8 bats in one
game.
a. Let X be the number of hits Mike got. The distribution of X
is a binomial probability distribution. What is the number of

3. trials (n), probability of successes (p) and probability of failures
(q).
b. Find the probability that he gets at least 5 hits in one game
(round to 3 decimals)
3. Assume that gas mileage for cars is normally distributed with
a mean of 25 miles per gallon and a standard deviation of 10
miles per gallon.
a. What is the probability that a randomly selected car gets
between 22 and 28 miles per gallon? (round to 4 decimals)
b. Find the 90th percentile of the miles per gallon distribution
(round to 2 decimals)
4. A psychologist is evaluating different therapies for treating
depression. The psychologist selects 100 clients and randomly
assigns 25 to each group. After 8 weeks of treatment a
depression inventory is administered. Which statistical approach
should be used?
a. confidence interval
b. t-test
c. ANOVA
d. Chi square
5. BGE has electricity savings days where it gives back to its
customers a percentage of its savings for using less electricity
than normal. Before going with this program for the entire state
of Maryland, BGE tested this concept using 100 single family
households during the month of July when the temperature was
predicted to exceed 90 degrees. 50 families were asked to
conserve energy but got no monetary incentives. The other 50
families were asked to conserve energy but were offered
additional menetary incentives. At the end of July the total
energy usage was measured. What would be the appropriate
hypothesis test to use to see if monetary incentives would
reduce energy consumption?
a. t-test for two independent variable

4. b. t-test for dependent samples
c. z-test for population mean
d. correlation
e. none of the above
6. According to GEICO less than 25% of auto accidents involve
teenagers. According to Maryland records 100 of 500 auto
accidents involved teenagers. Using a 0.05 significance level,
answer the following:
a. What is the appropriate hypothesis test to do this analysis?
b. What is the null hypothesis and the alternative hypothesis?
c. What is the test statistic ((two decimal places)?
d. What is the p-value (3 decimal places) ?
e. Compare the p-value and the signifcance level alpha (reject
or fail to reject)
f. Do the results support Geico's claim?
7. A business analyst in the Washington, D.C. area looked at the
following Christmas 2016 and 2017 toy sales in Metro D.C.
Six toy stores were were contacted and shared the following
information where x is 2016 sales and y represents 2017
x (in dollars)
y (in dollars)
10,000
11,500
5000
4500
7500
8500
12,500
13,000
8500
8300
5500
4800
a. find an equation of the least squares regression line with the

5. slope and y-intercept rounded to 2 decimal places
b. Using (a) with a 2016 December holiday sales of $6000, what
is the predicted 2017 December holiday sales?
c. for a 2016 sales number of $25,000, the 2017 December
prediction would be?
d. What would be your guess for 2018 Christmas sales with
everything we talked about in our class?
8. According to the latest poll, 750 adult respondents believe in
global warming. Construct a 95% confidence interval estimate
of the proportion of adults who believe in global warming.
Round your lower bound and upper bound of the confidence
interval to 3 decimal places.
9. Based on the performance of all individuals who took the
GRE Verbal Reasoning Exam for the last three academic years,
test takers had a mean score of 150 and a standard deviation of
8.5
a. For a sample size of 100, state the standard deviation of the
sample mean (standard error of the mean) to 3 decimal places.
b. Find the probability that the sample mean scores is more than
155 (rounded to 3 decimal places)
10. Does an exercise program lower cholesterol? 100 adults
were given a weekly exercise program. Cholesterol levels were
measured before and after this treatment. the changes in their
LDL cholesterol (mg/dL) have a mean of 6 and a standard
deviation of 4.
Construct a 90% interval estimate of the mean change in LDL
cholesterol after treatment. Round lower and upper bound of the
confidence interval to 2 decimal places. Show your work.