Question

A study is done to test the claim that Company A retains its workers longer than...

A study is done to test the claim that Company A retains its workers longer than Company B. Company A samples 16 workers, and their average time with the company is 5.2 years with a standard deviation of 1.1. Company B samples 21 workers, and their average time with the company is 4.6 years with a standard deviation of 0.9. The populations are normally distributed.
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
A study is done to test the claim that Company A retains its workers longer than...
A study is done to test the claim that Company A retains its workers longer than Company B. Company A samples 16 workers, and their average time with the company is 5.2 years with a standard deviation of 1.1. Company B samples 21 workers, and their average time with the company is 4.6 years with a standard deviation of 0.9. The populations are normally distributed. Please show all work.
A study is done to test the claim that Company A retains its workers longer than...
A study is done to test the claim that Company A retains its workers longer than Company B. Company A samples 16 workers, and their average time with the company is 5.2 years with a standard deviation of 1.1. Company B samples 21 workers, and their average time with the company is 4.6 years with a standard deviation of 0.9. The populations are normally distributed. Write hypotheisis in a symbolic form Find the critical value or p-value Reject the null...
0.2 point for writing the hypothesis in symbolic form. 0.2 point for determining the value of...
0.2 point for writing the hypothesis in symbolic form. 0.2 point for determining the value of the test statistic. 0.2 point for finding the critical value OR the p-value. 0.2 point for determining if you should reject the null hypothesis or fail to reject the null hypothesis. 0.2 point for writing a conclusion addressing the original claim. All work must be shown in order to receive any credit. Please upload your completed assignment here. A study is done to test...
A) A study was done for a company. On average, customers spend 25 minutes in the...
A) A study was done for a company. On average, customers spend 25 minutes in the store, with standard deviation of 10 minutes. Assume the standard deviation is from a population that is normally distributed. If a random sample of 16 customers were chosen, what is the probability that they will spend 21.075 minutes or less? B)  what is the probability that a random sample of 25 customers would spend more than 26.5 minutes?
In order to investigate the difference between mean job tenure in years among workers who have...
In order to investigate the difference between mean job tenure in years among workers who have a college          degree and those who do not, random samples of each type of worker were taken.  A random sample of 16          workers with a college degree had a mean of 5.7 years with a standard deviation of 1.3.  A random sample          of 21 workers without a college degree had a mean of 5.0 years with a standard deviation of 1.5.  Use an         significance level to test...
A study was done using a treatment group and a placebo group. The results are shown...
A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed​ populations, and do not assume that the population standard deviations are equal. Complete parts​ (a) and​ (b) below. Use a 0.05 significance level for both parts. Treatment Placebo μ μ 1 μ 2 n 26 30 x̅ 2.34 2.61 s 0.96 0.66 Test the claim that the...
Test the indicated claim about the means of two populations. Assume that the two samples are...
Test the indicated claim about the means of two populations. Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Use the traditional method. 1) A researcher was interested in comparing the response times of two different cab companies. Companies A and B were each called at 50 randomly selected times. The calls to company A were made independently of the calls to company B....
A study was done using a treatment group and a placebo group. The results are shown...
A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed​ populations, and do not assume that the population standard deviations are equal. Complete parts​ (a) and​ (b) below. Use a 0.05 significance level for both parts. Treatment Placebo u u1 u2 n 34 30 x 2.34 2.62 s 0.58 0.95 1. The test statistic is _____ (round...
it's important - give your best please :) Test the claim that the samples come from...
it's important - give your best please :) Test the claim that the samples come from populations with the same mean. Assume that the populations are normally distributed with the same variance. Given the sample data below, test the claim that the population have the same mean. Use a significance level of 0.05. Brand A Brand B Brand C Brand D n=16 n=16 n=16 n=16 =2.09 =3.48 =1.86 =2.84 s=0.37 s=0.61 s=0.45 s=0.53
A study was done using a treatment group and a placebo group. The results are shown...
A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed? populations, and do not assume that the population standard deviations are equal. Complete parts? (a) and? (b) below. Use a 0.01 significance level for both parts. treatment, u1, n=25, x=2.35, s=.52 Placebo, u2, n=39, x=2.68, s=.92 Test statistic, t, is= P value= ?<u1-u2<? Reject?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT