# A researcher hypothesizes that individuals who listen to classical

Question 6:

A researcher hypothesizes that individuals who listen to classical music will score differently from the general population on a test of spatial ability. On a standardized test of spatial ability, µ =58.A random sample of 14 individuals who listen to classical music is given the same test. Their scores on the test are 52, 59, 63, 65, 58, 55, 62, 63, 53, 59, 61, 60, 57 and 59.

a) Is this a one-or two – tailed test?

b) What are H0 and Ha for this study?

c) Compute t obt.

e) Should H0 be rejected? What should the researcher conclude?

f) Determine the 95% confidence interval for the population mean, based on the sample

Question 8:

A researcher believes that thepercentage of people who exercise in California is greater than the nationalexercise rate. The national rate is20%. The researcher gathers a randomsample of 120 individuals who live in the California and finds that the numberwho exercise regularly is 31 out of 120.

a. What is X2obt?

b. What is df for this test?

c. What is X2cv?

d. What conclusion should be drawn from these results?

## 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.