Assignment 3 – Week 3Name: ___________________
a) Enter all your answers into this Word document (immediately following the relevant question)
and submit the entire document. IMPORTANT: The name of your Word document MUST
begin with your LAST NAME, for instance SMITH-Assignment3. Do not forget to save it as
Word document, so the file name would be SMITH-Assignment3.docx
b) When you use a Template to calculate an answer, copy and paste the results into this
c) While putting your answers in a different color font is helpful, please DO NOT use red font
since this is the color used to provide feedback on your answers.
Chapter 9 #68 – British Men’s Age at Marriage (Data File BritainMarriages)
Data from the Office for National Statistics show that the mean age at which men in Great Britain
married in 2013 is 30.8 years. A news reporter noted that this represents a continuation of the trend of
waiting until a later age to wed. A new sample of 47 recently wed British men provided their age at the
time of marriage. These data are contained in the file BritainMarriages.
Do these data indicate that the mean age of British men at the time of marriage exceeds the mean age
in 2013? Test this hypothesis at a = .05. What is your conclusion?.
Ch 10 – #40 – Load Versus No-Load Mutal Funds. (Data File Mutual)
Mutual funds are classified as load or no-load funds. Load funds require an investor to pay an initial fee
based on a percentage of the amount invested in the fund. The no-load funds do not require this initial
fee. Some financial advisors argue that the load mutual funds may be worth the extra fee because these
funds provide a higher mean rate of return than the no-load mutual funds. A sample of 30 load mutual
funds and a sample of 30 no-load mutual funds were selected. Data in the file Mutual were collected on
the annual return for the funds over a five-year period.
a. Formulate H0 and Ha such that rejection of H0 leads to the conclusion that the load mutual funds
have a higher mean annual return over the five-year period.
b. Conduct the hypothesis test. What is the p-value? At a = .05, what is your conclusion?
Ch 11 – #26 – Manufacture of Ball Bearings.
Ball bearing manufacturing is a highly precise business in which minimal part variability is critical. Large
variances in the size of the ball bearings cause bearing failure and rapid wear out. Production standards
call for a maximum variance of .0001 inches2. Gerry Liddy has gathered a sample of 15 bearings that
shows a sample standard deviation of .014 inches.
a. Use a = .10 to determine whether the sample indicates that the maximum acceptable variance is
b. Compute the 90% confidence interval estimate of the variance of the ball bearings in the population
Ch 14 – # 67 – Income and Percent Audited.
The Transactional Records Access Clearinghouse at Syracuse University reported data showing the odds
of an Internal Revenue Service audit. The following table shows the average adjusted gross income
reported and the percent of the returns that were audited for 20 selected IRS districts
a. Develop the estimated regression equation that could be used to predict the percent audited given
the average adjusted gross income reported.
b. At the .05 level of significance, determine whether the adjusted gross income and the percent audited
c. Did the estimated regression equation provide a good fit? Explain.
d. Use the estimated regression equation developed in part (a) to calculate a 95% confidence interval for
the expected percent audited for districts with an average adjusted gross income of $35,000
Ch 15 -#54 – Analyzing Repeat Purchases.
The Tire Rack, America’s leading online distributor of tires and wheels, conducts extensive testing to
provide customers with products that are right for their vehicle, driving style, and driving conditions. In
addition, the Tire Rack maintains an independent consumer survey to help drivers help each other by
sharing their long-term tire experiences. The following data show survey ratings (1 to 10 scale with 10
the highest rating) for 18 maximum performance summer tires. The variable Steering rates the tire’s
steering responsiveness, Tread Wear rates quickness of wear based on the driver’s expectations, and
Buy Again rates the driver’s overall tire satisfaction and desire to purchase the same tire again.
a. Develop an estimated regression equation that can be used to predict the Buy Again rating given
based on the Steering rating. At the .05 level of significance, test for a significant relationship.
b. Did the estimated regression equation developed in part (a) provide a good fit to the data?
c. Develop an estimated regression equation that can be used to predict the Buy Again rating given
the Steering rating and the Tread Wear rating.
d. Is the addition of the Tread Wear independent variable significant? Use a = .05.
Ch 16 – #27 – Autocorrelation in Stock Price.
The following data show the daily closing prices (in dollars per share) for a stock.
a. Define the independent variable Period, where Period = 1 corresponds to the data for
November 3, Period = 2 corresponds to the data for November 4, and so on. Develop the
estimated regression equation that can be used to predict the closing price given the value of
b. At the .05 level of significance, test for any positive autocorrelation in the data.
Mutual Funds – Load
American National Growth
Arch Small Cap Equity
Bartlett Cap Basic
Calvert World International
Colonial Fund A
Common Sense Growth
Corefund Core Equity
Davis Convert Seurities
Deleware Small Cap
Dreyfus Premium Value
Federated Stocks & Bonds
First Invest FD for Income
Flag Inv Emerging Growth
Fortis Equity Capital
Franklin STR GL UT
Gabelli Value Fund
IDS New Dimensions
John Hancock Growth & Income
Lord Abbett Dev Growth
Merrill Basic Value
MFS World Tot Return
New England Growth Opp
Oppenhmr Quest Small Cap
Stagecoach Disd Income
United Contl Income
Victory OH Regional
Zweig SR TR Apprec
Mutual Funds – No Load
Amana Income Fund
Berger One Hundred
Columbia International Stock
Dodge & Cox Balanced
Forthis Advtg Cap App
Founders Blue Chip Fund
Goldman Core Fixed Income
Manstay Cap Appriciation
Merrill Spec Value
Oberweis Emerging Growth
Paine Webber Growth & Income
Pimco Total Return
Putnam Growth & Income
Royce FD Micro-Cap
Smith Barney Appreciation
Stein Roe Capital Oppty
T Rowe Price Balanced
Thompson Plumb Growth
USAA Growth & Tax Strat
Vanguard Equity Income
Vontobel Intl Equity
Steering Tread Wear Buy Again
Goodyear Assurance TripleTred
Dunlop SP 60
Goodyear Assurance ComforTred
Yokohama Aegis LS4
Kumho Power Star 758
Michelin Energy LX4
Dunlop SP 40 A/S
Bridgestone Insignia SE200
Dunlop SP20 FE
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.Read more
Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.Read more
Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.Read more
Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.Read more
By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.Read more