MATH 533 Final Exam Set 2 (New)
This Tutorial was purchased 5 times & rated B+ by student like you.
This Tutorial contains following Attachments
 MATH 533 Final Exam Set 2.doc
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.
b. In the context of this situation, interpret the Median, Q1, and Q3. (Points : 33)
a.
b. Median of the above sales calls means that if all the sales calls data points are arranged in an ascending order, then 91 Nos. of calls made would fall in the middle. So, there are as 8 sales calls
2. (TCO B) Cedar Home Furnishings has collected data on their customers in terms of whether they reside in an urban location or a suburban location, as well as rating the customers as either “good,” “borderline,” or “poor.” The data is below.
Urban Suburban Total
Good 60 168 228
Borderline 36 72 108
Poor 24 40 64
Total 120 280 400
If you choose a customer at random, then find the probability that the customer
a. is considered “borderline.”
b. is considered “good” and resides in an urban location.
c. is suburban, given that customer is considered “poor.” (Points : 18)
3. (TCO B) Historically, 70% of your customers at Rodale Emporium pay for their purchases using credit cards. In a sample of 20 customers, find the probability that
a. exactly 14 customers will pay for their purchases using credit cards.
b. at least 10 customers will pay for their purchases using credit cards.
4. (TCO B) The demand for gasoline at a local service station is normally distributed with a mean of 27,009 gallons per day and a standard deviation of 4,530 gallons per day.
a. Find the probability that the demand for gasoline exceeds 22,000 gallons for a given day.
c. How many gallons of gasoline should be on hand at the beginning of each day so that we can meet the demand 90% of the time (i.e., the station stands a 10% chance of running out of gasoline for that day)? (Points : 18)
5. (TCO C) An operations analyst from an airline company has been asked to develop a fairly accurate estimate of the mean refueling and baggage handling time at a foreign airport. A random sample of 36 refueling and baggage handling times yields the following results.
Sample Size = 36
Sample Mean = 24.2 minutes
Sample Standard Deviation = 4.2 minutes
a. Compute the 90% confidence interval for the population mean refueling and baggage time.
b. Interpret this interval.
c. How many refueling and baggage handling times should be sampled so that we may construct a 90% confidence interval with a sampling error of .5 minutes for the population mean refueling and baggage time? (Points : 18)
6. (TCO C) The manufacturer of a certain brand of toothpaste claims that a high percentage of dentists recommend the use of their toothpaste. A random sample of 400 dentists results in 310 recommending their toothpaste.
a. Compute the 99% confidence interval for the population proportion of dentists who recommend the use of this toothpaste.
b. Interpret this confidence interval.c. How large a sample size will need to be selected if we wish to have a 99% confidence interval that is accurate to within 3%? (Points : 18)
7. (TCO D) A Ford Motor Company quality improvement team believes that its recently implemented defect reduction program has reduced the proportion of paint defects. Prior to the implementation of the program, the proportion of paint defects was .03 and had been stationary for the past 6 months. Ford selects a random sample of 2,000 cars built after the implementation of the defect reduction program. There were 45 cars with paint defects in that sample. Does the sample data provide evidence to conclude that the proportion of paint defects is now less than .03 (with a = .01)? Use the hypothesis testing procedure outlined below.
a. Formulate the null and alternative hypotheses.
b. State the level of significance.
c. Find the critical value (or values), and clearly show the rejection and nonrejection regions.
d. Compute the test statistic.
e. Decide whether you can reject Ho and accept Ha or not.
f. Explain and interpret your conclusion in part e. What does this mean?
g. Determine the observed pvalue for the hypothesis test and interpret this value. What does this mean?
h. Does the sample data provide evidence to conclude that the proportion of paint defects is now less than .03 (with a = .01)? (Points : 24)
8. (TCO D) A new car dealer calculates that the dealership must average more than 4.5% profit on sales of new cars. A random sample of 81 cars gives the following result.
Sample Size = 81
Sample Mean = 4.97%
Sample Standard Deviation = 1.8%
Does the sample data provide evidence to conclude that the dealership averages more than 4.5% profit on sales of new cars (using a = .10)? Use the hypothesis testing procedure outlined below.
a. Formulate the null and alternative hypotheses.
b. State the level of significance.
c. Find the critical value (or values), and clearly show the rejection and nonrejection regions.
d. Compute the test statistic.
e. Decide whether you can reject Ho and accept Ha or not.
f. Explain and interpret your conclusion in part e. What does this mean?
g. Determine the observed pvalue for the hypothesis test and interpret this value. What does this mean?
h. Does the sample data provide evidence to conclude that the dealership averages more than 4.5% profit on sales of new cars (using a = .10)? (Points : 24)
1. (TCO E) Bill McFarland is a real estate broker who specializes in selling farmland in a large western state. Because Bill advises many of his clients about pricing their land, he is interested in developing a pricing formula of some type. He feels he could increase his business significantly if he could accurately determine the value of a farmer’s land. A geologist tells Bill that the soil and rock characteristics in most of the area that Bill sells do not vary much. Thus the price of land should depend greatly on acreage. Bill selects a sample of 30 plots recently sold. The data is found below (in Minitab), where X=Acreage and Y=Price ($1,000s).
a. Analyze the above output to determine the regression equation.
b. Find and interpret in the context of this problem.
c. Find and interpret the coefficient of determination (rsquared).
d. Find and interpret coefficient of correlation.
= .05) that the acreage can be used to predict the price? Test the utility of this model using a twotailed test. Find the observed pvalue and interpret. ae. Does the data provide significant evidence (
f. Find the 95% confidence interval for mean price of plots of farmland that are 50 acres. Interpret this interval.
g. Find the 95% prediction interval for the price of a single plot of farmland that is 50 acres. Interpret this interval.
h. What can we say about the price for a plot of farmland that is 250 acres? (Points : 48)
1. (TCO E) An insurance firm wishes to study the relationship between driving experience (X1, in years), number of driving violations in the past three years (X2), and current monthly auto insurance premium (Y). A sample of 12 insured drivers is selected at random. The data is given below (in MINITAB):
a. Analyze the above output to determine the multiple regression equation.
b. Find and interpret the multiple index of determination (RSq).
= .05). Interpret your results. ac. Perform the ttests on and on (use two tailed test with (
d. Predict the monthly premium for an individual having 8 years of driving experience and 1 driving violation during the past 3 years. Use both a point estimate and the appropriate interval estimate.
(Points : 31)
Write a review
Order IdOrder Id will be kept Confidential
Your Name:
Your Review:
Rating: A B C D F
Enter the code in the box below:
MATH 533 Week 7 Course Project Part C: Regression and Correlation Analysis (SALESCALL Project) (New)
This Tutorial was purchased 7 times & rated B+ by student like you.
Your Instructor will specify for you the dependent variable and the independent variables in your Case and data. Using MINITAB perform the regression and correlation analysis for the data by answering the following.
Generate a scatterplot for the specified dependent variable and the..

This Tutorial was purchased 5 times & rated A by student like you.
Your Instructor will provide you with four manager speculations, a.d., in the Doc Sharing file.
Using the sample data, perform the hypothesis test for each of the above situations in order to see if there is evidence to support your manager’s belief in each case a.d. In ..

This Tutorial was purchased 1 times & rated No rating by student like you.
1. Data on the average annual precipitation (y), altitude (x1), latitude (x2), and distance from the coast (x3) for a particular state were collected for 10 meteorological stations. The observations are listed in the table below. Consider the firstorder model y = &n..

This Tutorial was purchased 3 times & rated No rating by student like you.
1. Researchers developed a safety performance function (SPF), which estimates the probability of occurrence of a crash for a given segment of roadway. Using data on over 100 segments of roadway, they fit the model E(y) = + + , where y = number of crashes ..

This Tutorial was purchased 3 times & rated B+ by student like you.
Read the Case: Statistics in Action: BidRigging in the Highway Construction Industry, in Chapter 11 of your textbook, and answer the following questions. The data set, FLAG, for the case study is available in the publisher’s website, so you don’t need to enter the data into Minitab by hand.
..

This Tutorial was purchased 5 times & rated A by student like you.
1. An association was formed by students to protest labor exploitation in the apparel industry. There were 18 student “sitins” for a “sweetfree campus” organized at several universities. Data were collected for the duration (in days) of each sitin, as well as the ..

This Tutorial was purchased 2 times & rated No rating by student like you.
1. A MINITAB printout relating the size of the diamond (number of carats) to the asking price (dollars) for 308 diamonds is shown below. Complete parts a through e.
2. The average driving distance (yards) and driving accuracy (percen..

This Tutorial was purchased 1 times & rated A+ by student like you.
Read the Case: Statistics In Action: Legal Advertising—Does It Pay?, and answer the following questions. (The case is included in your textbook, Chapter 10.) The data set for the case study is LEGALADV, and it is available in your textbook resources, so you don't have to enter the data!
Summa..

This Tutorial was purchased 3 times & rated No rating by student like you.
1. A group of professors investigated firstyear college students’ knowledge of astronomy. One concept of interest was the Big Bang Theory of the creation of the universe. In a sample 0f 141 freshman students, 35 believed that the Big Bang Theory accurately described..

This Tutorial was purchased 4 times & rated A by student like you.
1. A study of n = 90,000 firsttime candidates for an exam found that the number of semester hours of college credit taken by the sampled candidates is summarized by x = 145.72 and s = 18.53. A professor claims that the true mean number of semester hours of college c..

This Tutorial was purchased 3 times & rated No rating by student like you.
Read the selection in your text book pertaining to the Case: Statistics in Action: Diary of a Kleenex® User; load the data set for the case, TISSUES, into Minitab; answer the question about the case in the Discussion area; and likewise read and respond to the followon selections in the textbook ..

This Tutorial was purchased 5 times & rated No rating by student like you.
1. A random samples of 1020 satellite radio subscribers were asked, “Do you have a satellite radio receiver in your car?” The survey found that 102 subscribers did, in fact, have a satellite receiver in their car.
2. Each child in a ..

This Tutorial was purchased 3 times & rated No rating by student like you.
1. Health Care workers who use latex gloves with glove powder on a daily basis are particularly susceptible to developing a latex allergy. Each in a sample of 43 hospital employees who were diagnosed with a latex allergy based on a skinprick test reported on their e..

This Tutorial was purchased 3 times & rated B+ by student like you.
Read the selection in your textbook pertaining to the Case: Statistics in Action: Medicare Fraud Investigations; load the data set for the case, MCFRAUD, into Minitab; answer the question about the case in the Discussion area; and likewise read and respond to the followon selections in the textb..

This Tutorial was purchased 6 times & rated A by student like you.
1. The average salary for a certain profession is $97,000. Assume that the standard deviation of such salaries is $33,500. Consider a random sample of 54 people in this profession and let x represent the mean salary for the sample.
2. ..

This Tutorial was purchased 4 times & rated A by student like you.
1. The mean gas mileage for a hybrid car is 56 miles per gallon. Suppose that the gasoline mileage is approximately normally distributed with a standard deviation of 3.3 miles per gallon.
2. The ages of a group of 50 women are approx..

This Tutorial was purchased 1 times & rated No rating by student like you.
Why is it important to study ethics in statistics? Have you seen statistics misused? Without naming specific companies or people, can you provide examples?
Please find (on the Internet or from the Keller library) and post an article regarding ethics and statistics. Please attach the art..

This Tutorial was purchased 2 times & rated No rating by student like you.
1. A country’s government has devoted considerable funding to missile defense research over the past 20 years. The latest development is the SpaceBased Infrared System (SBIRS), which uses satellite imagery to detect and track missiles. The probability that an intrud..

This Tutorial was purchased 4 times & rated A by student like you.
1. The table to the right gives a breakdown of 2,149 civil cases that were appealed. The outcome of the appeal, as well as the type of trial (judge or jury), was determined for each case. Suppose one of the cases is selected at random and the outcome of the appeal an..

This Tutorial was purchased 3 times & rated B+ by student like you.
A number of years ago, there was a popular television game show called Let's Make a Deal. The host, Monty Hall, would randomly select contestants from the audience and, as the title suggests, he would make deals for prizes. Contestants would be given relatively modest prizes and then would be off..

This Tutorial was purchased 6 times & rated B+ by student like you.
1. Graph the relative frequency histogram for the 300 measurements summarized in the relative frequency table to the right.
2. Would you expect the data sets that follow to possess relative frequency distributions that are symmetric,..

This Tutorial was purchased 1 times & rated No rating by student like you.
1. Complete the table to the right.
2. In one university, language incorporated a 10week extensive reading program to improve students’ Japanese reading comprehension. The professors collected 267 books originally written for Japane..

This Tutorial was purchased 4 times & rated A by student like you.
1. (TCO D) PuttingPeople2Work has a growing business placing outofwork MBAs. They claim they can place a client in a job in their field in less than 36 weeks. You are given the following data from a sample.
Sample size: 100
Population standard deviation: 5
Sample mean: 34.2
Form..

This Tutorial was purchased 7 times & rated A+ by student like you.
MATH 533 Week 1 Homework
MATH 533 Week 1 Quiz
MATH 533 Week 2 DQ 1 Case Let's Make a Deal
MATH 533 Week 2 Homework (2 Sets)
MATH 533 Week 2 Quiz
MATH 533 Week 3 DQ 1 Ethics in Statistics Readings and Discussion
MATH 533 Week 3 Homework
MATH 533 Week 3 Quiz (2 Sets)
..
