# The branch manager ofan outlet (store i) ofa nationwide chain of pet

Question 8.73

The branch manager ofan outlet (Store I) ofa nationwide

chain of pet supply stores wants to study characteristics

of her customers. In particular, she decides to focus on

two variables: the amount of money spent by customers and

whether the customers own only one dog, only one cat, or

more than one dog and/or cat. The results from a sample of

70 customers are as follows:

• Amount of money spent: X \$2 1.34, S \$9.22.

• 37 customers own only a dog.

• 26 eustomers own only a cat.

• 7 customers own more than one dog and/or cat.

a. Construct a 95% confidence interval estimate for the

population mean amount spent in the pet supply store.

b. Construct a 90% confidence interval estimate for the

population proportion of customers who own only a cat.

The branch manager of another outlet (Store 2) wishes to

conduct a similar survey in his store. The manager does not

Store I. Answer the following questions:

c. What sample size is needed to have 95% confidence of

estimating the population mean amount spent in this store

to within ± \$1.50 if the standard deviation is estimated to

be \$10?

d. How many customers need to be selected to have 90%

confidence of estimating the population proportion of

customers who own only a cat to within ±0.045?

## Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
\$26
The price is based on these factors:
Number of pages
Urgency
Basic features
• Free title page and bibliography
• Unlimited revisions
• Plagiarism-free guarantee
• Money-back guarantee
On-demand options
• Writer’s samples
• Part-by-part delivery
• Overnight delivery
• Copies of used sources
Paper format
• 275 words per page
• 12 pt Arial/Times New Roman
• Double line spacing
• Any citation style (APA, MLA, Chicago/Turabian, Harvard)

# Our guarantees

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.

### Money-back guarantee

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.

### Zero-plagiarism guarantee

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.

### Free-revision policy

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.