A car maintenance company bas recorded March 222020 data on.pdf

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A car maintenance company bas recorded March 22;2020 data on the maintenance cost of a car ( y) and the age of the car (x). Below is the Excel output of the relationship between maintenance cost of a car and the age of a car. The values of R square and MSE have been ommitted - You are required to calculate these values.The values of R square and MSE have been ommitted - You are required to calculate those values. a) What is the prediction equation? b) Based on the significance F-test, is this model a good prediction equation? c) What percent of the variation in quarterly maintenance cost is explained by the age of the car? d) Based on his model, what are the predicted quarterly maintenance cost when the car is 25-year-old? e) What is the estimated slope coefficient and how do you interpret it? f) What is the estimated intercept coefficient and how do you interpret it?.

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For more course tutorials visit uophelp.com is now newtonhelp.com www.newtonhelp.com 1. (TCO A) Seventeen salespeople reported the following number of sales calls completed last month. 72 93 82 81 82 97 102 107 119 86 88 91 83 93 73 100 102 a. Compute the mean, median, mode, and standard deviation, Q1, Q3, Min, and Max for the above sample data on number of sales calls per month.

Math 533 final exam set 2

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Question 1 – Exercise 8.3 Why is it not possible in Example 8.1 on page 256 to have 100% confidence? Explain. Answer If you have 100% confidence in the value of the calculated mean, then have the true population mean and the only way to have the true population mean is to use the entire population, which they did not do in Example 8.1. Question 2 – Exercise 8.19 The file Sedans contains the overall miles per gallon (MPG) of 2009 sedans priced under $20.000. 27 31 30 28 27 24 29 32 32 27 26 26 25 26 25 24 Source: Data extracted from “Vehicle Ratings,” Consumer Reports, April 2009, p. 27 a) Construct a 95% confidence interval estimate for the population mean MPG of 2009 sedans (4-cylinder) priced under $20.000, assuming a normal distribution. b) Interpret the interval constructed in (a). c) Compare the results in (a) to those in Problem 8.20 (a) Note: To answer Question 2 – Exercise 8.19 I did Question 2 – Exercise 8.20(a) offline. Question 2 – Exercise 8.19 is continued on the next page… Question 2 – Exercise 8.19 (Continued…) Answer: Part (a) Answer: Part (b) I can be 95% confident that the true population mean of MPG of 2009 sedans (4-cylinder) priced under $20,000 is between 26.0215 and 28.8535 assuming a normal distribution. Answer: Part (c) I can be 95% confident that the true population mean of MPG of 2009 small SUV’s is less than the true population mean of MPG of 2009 sedans (4-cylinder) priced under $20,000 since the two confidence intervals do not overlap. Question 3 – Exercise 8.22 One of the major measures of the quality of service provided by any organization is the speed with which t responds to customer complaints. A large family-held department store selling furniture and flooring, including carpet, had undergone a major expansion in the past several years. In particular, the flooring department had expanded from 2 installation crews. The store had the business objective of improving its response to complaints. The variable of interest was defined as the number of days between when the complaint was made and when it was resolved. Data were collected from 50 complaints that were made in the last year. The data were stored in Furniture and are as follows: 54 5 35 137 31 27 152 2 123 81 11 19 126 110 110 29 61 35 94 31 12 4 165 32 29 28 29 26 25 1 13 10 5 27 4 52 30 22 36 26 33 68 74 27 26 5 14 13 20 23 a) Construct a 95% confidence interval estimate for the population mean number of days between the receipt of a complaint and the resolution of the complaint. b) What assumption must you make about the population distribution in order to construct the confidence interval estimate in (a)? c) Do you think that the assumption needed in order to construct the confidence interval estimate in (a) is valid? Explain d) What effect might your conclusion in (c) have on the validity of the results in (a)? Question 3 – Exercise 8.22 is continued on the next page… Question 3 – Exercise 8.22 (Continued) Answer: Part (a) ...

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CHIA PRACITES EXSAM 1. Most of the entities below are classified as “Parent Companies”. Which one is a “Chain” that is a member of a Larger Parent Company? A) Accor B) Holiday Inn C) Choice D) Starwood 2. Which one of the following statements about management companies is accurate? A) Parent companies will always use a management company to manage their corporate owned hotels. B) A management company can only manage hotels for a single chain. C) A management company and an asset management company provide the same service. D) A management company has a contract where it receives payment and/or some portion of profits. 3. Which one of the following statements regarding the Scale and Class categories is accurate? A) STAR Reports compare the subject hotel to the competitive set, not to Scale or Class groups. B) The Class category is used to combine independent hotels with chain hotels at similar ADR levels. C) There are 6 Scale groups and 7 Class groups. D) The Class category is most popular in the US and the Scale category is most popular outside the US. 4. Which one of the following statements regarding Scale and Class groups and a single chain is accurate? A) It is possible for the Holiday Inn Chain to switch from one Scale group to another in the middle of the year if their average ADR changes dramatically. B) A holiday Inn hotel in the US can be one Scale group and a Holiday Inn hotel in Germany can be in a different Scale group C) A holiday Inn hotel in the US can be one Class group and a Holiday Inn hotel in Germany can be in a different Class group D) A Holiday Inn Hotel will always be in the same Scale and Class groups in every country throughout the world. 5. Which one of the following is a non-geographic category used by the hotel industry? A) Extended Stay B) Location C) Scale D) All of the above categories are used 6. Which one of the following is NOT a good reason for a hotel to have an additional competitive set? A) The hotel has one set that it can easily beat and another that is a realistic target. B) A hotel is located between two cities so they have one competitive set related to one city and another related to the second city. C) The hotel has a local competitive set based upon geography and another based upon a special feature or niche, i.e. waterpark, boutique, or conference. D) The hotel has different sets for weekday/Weekend or group. Transient mix 7. 8. Compare 9. Which one of the following statements regarding the importance of the RevPAR metric is NOT accurate? A) RevPAR is important since it is a combination of Occupancy and ADR. B) REvPAR is calculated by dividing Room Revenue by Demand. C) If a hotel has a very high Occupancy with a low ADR or a very high ADR with a low occupancy, the RevPAR would not reflect that unusual situation. D) A general manager of a hotel might receive a bonus related to the RevPAR metric. 10. Which one of the following is NOT an accurate statement related to Full Availability? A) The Full ...

CHIA PRACITES EXSAM1. Most of the entities below are classified .docx

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1). The budgeting process for a southeastern college resulted in expense forecasts for the coming year (in $millions) of $13, $14, $15, $16, and $17. Because the actual expenses are unknown, the following respective probabilities are assigned: .21, .08, .27, .33, and .11. (10 pts) a). Show the probability distribution for the expense forecast. b). What is the expected value of the expenses for the coming year? c). What is the probability that the expenses for the coming year is at least $14 million? d). What is the probability that the expenses for the coming year is more than $15 million? e). If income projections for the year are estimated at $15 million, comment on the financial position of the college. 2). Worldwide golf ball sales in 2014 totaled an estimated 765 million golf balls worth $870 million. One reason for such a large number of golf ball purchases is that golfers lose them at the rate of 4.2 per 18-hole round. (10 pts) a). What is the probability that zero balls will be lost in an 18-hole round? b). What is the probability that less than 3 balls will be lost in an 18-hole round? c). What is the probability that at least 7 balls will be lost in a 36-hole round? d). What is the probability that 10 balls will be lost in a 72-hole round? 3). Ericsson Airlines has a central office that takes reservations for all flights flown by the airline. The calls received during any week have a median of 12,000 and a standard deviation of 2,500. (15 pts) a). During what percentage of the weeks does the airline receive more than 10,500 phone calls? b). During what percentage of the weeks does it receive more than 13,800 calls? c). During what percentage of the weeks does it receive between 12,600 and 13,400 calls? d). During what percentage of the weeks does the airline receive less than 12,800 or more than 15,600 calls? e). The lower 20% of phone calls are less than what number of phone calls during a week? 4). A company is going to release four quarterly reports this year. Suppose the company has a 32% chance of beating analyst expectations each quarter. (10 pts) a). What is the probability that the company beats analyst expectations every quarter of this year? b). What is the probability the company beats analyst expectations more than half the time this year? c). What is the expected number of times the company will beat analyst expectations this year? How much is this expected to vary? d). What is the probability the company will not beat analyst expectations for exactly two quarters? 5). Let x be the larger outcome in a function where a question is asked about how much money a person spent on their new car (in $thousands). (10 pts) f( x ) = (.

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