Question

3. A sample of ten salaries of football coaches in the NCAA is given below. Calculate...

3. A sample of ten salaries of football coaches in the NCAA is given below. Calculate a 95% confidence interval for the mean salary of all NCAA football coaches. 525000 350000 450000 618500 390000, 480900 345000 855000 304000 456500 For each problem, a) attach StatCrunch output, b) write a sentence of interpretation, and c) state the interval in margin of error form.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

a)

95 percent confidence interval:
 361301.5 593678.5

b)

we are 95% confident that the actual salary lies in this confidence interval

c)

sample mean =

477490

margin of error =

116188.5
477490  116188.5
0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A simple random sample of 40 salaries of NCAA football coaches in the NCAA has a...
A simple random sample of 40 salaries of NCAA football coaches in the NCAA has a mean of $423,811. The standard deviation of all salaries of NCAA football coaches is $463,364. Test the claim that the mean salary of a football coach in the NCAA is less than $500,000. Use a 0.05 significance level and conduct a full hypothesis test using the six-step process.
4. In a sample of 200 students who plan to apply to Ivy League universities, the...
4. In a sample of 200 students who plan to apply to Ivy League universities, the average annual family income was $143,325 with a standard deviation of $25,418. Compute a 95% confidence interval for the mean income of families with a student who plans to apply to an Ivy League university. For each problem, a) attach StatCrunch output, b) write a sentence of interpretation, and c) state the interval in margin of error form.
1.The sample mean is an unbiased estimator for the population mean. This means: The sample mean...
1.The sample mean is an unbiased estimator for the population mean. This means: The sample mean always equals the population mean. The average sample mean, over all possible samples, equals the population mean. The sample mean will only vary a little from the population mean. The sample mean has a normal distribution. 2.Which of the following statements is CORRECTabout the sampling distribution of the sample mean: The standard error of the sample mean will decrease as the sample size increases....
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT