Question

A simple random sample of 80 workers with high school diplomas is obtained, and the annual...

A simple random sample of 80 workers with high school diplomas is obtained, and the annual incomes have a mean of $37,622 and a standard deviation of $14,115. Another simple random sample of 39 workers with bachelor's degrees is obtained and the annual incomes have a mean of $77,689 with a standard deviation of $24,227. Use a 0.01 significance level to test the claim that workers with a high school diploma have a lower mean annual income than workers with a bachelor's degree.

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

Homework Answers

Answer #1

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
In a simple random sample of 460 young people, 85% had earned a high school diploma....
In a simple random sample of 460 young people, 85% had earned a high school diploma. Complete the following parts (Round all answers to 2 decimal places.) a) What is the standard error for this estimate of the percentage of all young people who earned a high school diploma? (as a percentage). Answer: % b) Find the margin of error, using a 95% confidence level, for estimating the percentage of all young people who earned a high school diploma. (as...
A survey of 1200 adult males finds that 412 have a high school diploma (but no...
A survey of 1200 adult males finds that 412 have a high school diploma (but no more education). From among those in the sample with high school diplomas, the mean annual income is $28,740 with a standard deviation of $4,270. Among the sample of workers without high school diplomas, the mean income is $22,600 with a standard deviation of $5,400. Use a hypothesis test to determine if annual income among individuals who complete high school is significantly larger than those...
An employment information service says the mean annual pay for full-time female workers over the age...
An employment information service says the mean annual pay for full-time female workers over the age of 25 and without high school diplomas is $17,000. A random sample of the annual salaries of 12 full-time female workers over 25 without high school diplomas is listed below. Table of Annual Salaries of 12 full-time female workers over 25 without high school diploma Data $15,316 $16,631 $17,328 $18,161 $16,009 $16,790 $17,503 $18,801 $16,114 $17,176 $18,028 $19,264 We are interested in testing the...
A simple random sample of 50 adults is obtained, and each person’s height is measured.The sample...
A simple random sample of 50 adults is obtained, and each person’s height is measured.The sample mean is 68 inches. The population standard deviation for heights is 2.35. • Use a 0.01 significance level to test the claim that the sample is from a population with a mean equal to 73, against the alternative hypothesis that the mean height is less than 73. (ASSUME Normal). If Z0.01=−2.32 and Z0.005=−2.57 are numbers s.t. P(Z < Z0.01) = 0.01 and P(Z <...
A simple random sample of 50 adults is obtained, and each person’s height is measured.The sample...
A simple random sample of 50 adults is obtained, and each person’s height is measured.The sample mean is 68 inches. The population standard deviation for heights is 2.35. Use a 0.01 significance level to test the claim that the sample is from a population with a mean equal to 73, against the alternative hypothesis that the mean height is less than 73. (ASSUME Normal). (5 points)If z0.01=−2.32 and z0.005=−2.57 are numbers s.t.P(Z < z0.01) = 0.01 andP(Z < z0.005) =...
Researchers collected a simple random sample of the times that 80 college students required to earn...
Researchers collected a simple random sample of the times that 80 college students required to earn their bachelor’s degrees. The sample has a mean of 4.8 years and a standard deviation of 1.2 years. Use a 10% significance level to test the claim that the mean time for all college students is less than 5 years.
A simple random sample of 50 adults is obtained, and each person’s height is measured. The...
A simple random sample of 50 adults is obtained, and each person’s height is measured. The sample mean is 68 inches. The population standard deviation for heights is 2.35. *Use a 0.01 significance level to test the claim that the sample is from a population with a mean equal to 73, against the alternative hypothesis that the mean height is NOT equal to 73. (ASSUME Normal). (5 points) If z0.01=−2.32 and z0.005=−2.57 are numbers s.t. P(Z < z0.01) = 0.01...
5. A simple random sample of 25 filtered 100 mm cigarettes is obtained, and the tar...
5. A simple random sample of 25 filtered 100 mm cigarettes is obtained, and the tar content of each cigarette is measured. The sample has a mean of 13.2 mg and a standard deviation of 3.7 mg. Use a 0.05 significance level to test the claim that the mean tar content of filtered 100 mm cigarettes is less than 21.1 mg, which is the mean for unfiltered king size cigarettes. 6. The heights are measured for the simple random sample...
An employment information service claims the mean annual pay for full-time male workers over age 25...
An employment information service claims the mean annual pay for full-time male workers over age 25 without a high school diploma is $22,250. The annual pay for a random sample of 10 full-time male workers over age 25 without a high school diploma is listed. At α=0.01, test the claim that the mean salary is $22,250. Assume the population is normally distributed. 20,659 21,136 22,356 21,398 22,978 16,913 19,153 23,196 24,186 26,283 What is(are) the critical value(s), t 0t0? t...
An employment information service claims the mean annual pay for full-time male workers over age 25...
An employment information service claims the mean annual pay for full-time male workers over age 25 without a high school diploma is $22,300. The annual pay for a random sample of 10 full-time male workers over age 25 without a high school diploma is listed. At α = 0.01, test the claim that the mean salary is $22,300. State null and alternative hypothesis, include graph of distribution indicating the rejection region, determine whether to reject or fail to reject based...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT