Question: 7.19. A GSS reported that the 486 females had a mean of 8.3 close friends (s = 15.6) and the 354 males had a mean

7.19. A GSS reported that the 486 females had a mean of 8.3 close friends (s = 15.6) and the 354 males had a mean of 8.9 close friends (.s = 15.5).

(a) A 95% confidence interval for the difference between the population means for males and for females is (-1.5, 2.7). Interpret.

(b) For each sex, does it seem like the distribution of number of close friends is normal?

Explain why this does notinvalidate the result in (a), but may affect the usefulness of the interval.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Nonparametric Statistical Inference Questions!

Q:

A GSS reported that the 486 females had a mean of 8.3 close friends (s = 15.6) and the 354 males had a mean of 8.9 close friends (s = 15.5). (a) A 95% confidence interval for the difference between...

Q:

A GSS reported that the 486 females had a mean of 8.3 close friends (s = 15.6) and the 354 males had a mean of 8.9 close friends (s = 15.5). (a) A 95% confidence interval for the difference between...

Q:

A GSS reported that the 486 females had a mean of 8.3 close friends (s 15.6) and the 354 males had a mean of 8.9 close friends (s = 15.5). (a) A 95% confidence interval for the difference between the...

Q:

A recent GSS reported that the 486 surveyed females had a mean of 8.3 close friends (s = 15.6) and the 354 surveyed males had a mean of 8.9 close friends (s = 15.5). a. Estimate the difference...

Q:

10.78 Females or males have more close friends? A recent GSS reported that the 486 surveyed females had a mean of 8.3 close friends 1s = 15.62 and the 354 surveyed males had a mean of 8.9 close...

Q:

10.78 Females or males have more close friends? A recent GSS reported that the 486 surveyed females had a mean of 8.3 close friends 1s = 15.62 and the 354 surveyed males had a mean of 8.9 close...

Q:

PSYCHOLOGICAL SCIENCE General Article WHO IS HAPPY? By David G. Myers' and Ed Diener 'Hope College and University of Illinois A flood of new studies explores people's subjective well-being (SWB)....

Q:

Read and answer the question below. EMBRACE DEMOGRAPHICS AND SOCIETAL CHANGES Using Differences to Drive Value Force 7: Demographics and Societal Changes. One of the most important forces that is...

Q:

The objective of the Homework assignment is to provide an opportunity to apply or practice the tools and techniques covered in the course and to provide an opportunity to articulate key concepts...

Q:

Possible Multiple Choice Questions for the Exam. Focus on the topics discussed in class. Chapter 1 Multiple Choice Identify the choice that best completes the statement or answers the question. ____...

Q:

The CFO of the ABC Corporation asks you to address the following three questions. ABC faces a top corporate marginal tax rate of 35% on both ordinary income and on capital gains. a. The firm is...

Q:

The Federal Reserve chose to target fed funds rate from 1970 to October 1979, and moved to targeting money supply, and moved back to targeting fed funds rates after July 1993. 1) Ceteris paribus, if...

Q:

What is the normal balance for voucher payable: debit or credit?

Q:

The total cost to produce x large jewelry-making kits and y small ones is given by C(x, y) = 2x 2 + 6y 2 + 4xy + 10. If a total of ten kits must be made, how should production be allocated so that...

Q:

Give an example of a variable having a distribution that you expect to be (a) approximately symmetric, (b) skewed to the right, (c) skewed to the left, (d) bimodal, (e) skewed to the right, with a...

Q:

Give an example of a variable for which the mode applies, but not the mean or median.

Q:

According to a national weather service, during the month of June 2016,4% of days were 20 Celsius or lower, 10% were 21 Celsius or lower, 26% were 22 Celsius or lower, 48% were 24 Celsius or lower,...

Q:

You make a one-time investment of $700 and leave it for 5 years, earning an annual interest rate of 4%. Part 1 How much interest will you have earned after 5 years? 0+ decimals Submit Attempt 1/3 for...

Q:

3 [18 marks]. A bank has issued a bond on April 1st 2020 which pays coupons at a rate of 3% of the nominal value twice a year in arrears. Coupon payments are due on 1st April and 1st October and the...

Q:

Balance Sheet Data 2024 2023 Cash and Receivables Merchandise Inventory 61,370 $ 38,060 31,920 13,860 96,710 58,080 Property, Plant, and Equipment, Net $ 190,000 $ 110,000 Total Assets Print Done - X...