ZuoTi.Pro
Question

Researchers from a payroll services company randomly sampled customer service representatives from two different industries. The...

Researchers from a payroll services company randomly sampled customer service representatives from two different industries. The first sample of 34 customer service representatives worked in banking, and the second sample of 36 customer service representatives worked in telecommunications. The results are given below. Using the 5% significance level, test the claim that the mean hourly wage for these two populations of workers is different (claim: μB ≠ μT) by choosing the correct answer choice below.

Sample Size

Mean Salary

 Population Standard Deviation
Banking (B)

34

 $

14.77

 $ 2.55
Telecommunications (T)

36

 $

13.82

 $

2.32

Which one?

Test statistic: 2.54, Critical values: ±1.96, Conclusion: We support the claim that the mean hourly wage is different.
Test statistic: 1.63, Critical values: ±1.96, Conclusion: We cannot support the claim that the mean hourly wage is different.
Test statistic: 1.63, Critical values: ±1.645, Conclusion: We cannot support the claim that the mean hourly wage is different.
Test statistic: −1.63, Critical values: ±2.326, Conclusion: We do not reject the claim that the mean hourly wage is different.
Test statistic: 2.03, Critical values: ±1.645, Conclusion: We support the claim that the mean hourly wage is different.
math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Correct option:

Test statistic: 1.63, Critical values: ±1.96, Conclusion: We cannot support the claim that the mean hourly wage is different.

Explanation:

H0:

HA:

nB = 36

nT = 36

= 0.05

From Table, critical valus of Z = 1.96

Test Statistic is given by:

Since calculated value of Z = 1.63 is less than critical value of Z= 1.96, the difference is not significant. Fail to reject null hypothesis.

Conclusion:We cannot support the claim that the mean hourly wage is different.

0 0
Add a comment
Know the answer?
Add Answer to:
Researchers from a payroll services company randomly sampled customer service representatives from two different industries. The...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Below are matched pair data consisting of customer service scores for a sample of 11 employees...

    Below are matched pair data consisting of customer service scores for a sample of 11 employees before and after they watched an instructional video on their company's mission statement. At a 0.2 significance level, use the sign test to test the claim that viewing the instructional video affects the employees' customer service scores. Before 61 48 71 78 76 50 62 52 78 55 60 After 59 49 76 82 74 53 62 57 81 55 63 (a) What is...

  • please provide detailed answer thank you! Below are matched pair data consisting of customer service scores...

    please provide detailed answer thank you! Below are matched pair data consisting of customer service scores for a sample of 10 employees before and after they watched an instructional video on their company's mission statement. At a 0.1 significance level, use the sign test to test the claim that viewing the instructional video affects the employees' customer service scores. Before After 52 57 46 47 46 48 60 58 36 38 38 41 56 58 38 41 61 64 38...

  • _ 9) In a sample of 10 randomly selected women, it was found that their mean height was 634 inches. From previous...

    _ 9) In a sample of 10 randomly selected women, it was found that their mean height was 634 inches. From previous studies, it is assumed that the standard deviation, , 124 inches and that the population of height measurements is normally distributed a) Construct the confidence interval for the population mean height of women b) If the sample size was doubled to 20 women, what will be the effect on the confidence interval? 10) 10) The numbers of advertisements...

  • Question 4 3 pts The Critical Value changes as we move from a two-tailed hypothes is...

    Question 4 3 pts The Critical Value changes as we move from a two-tailed hypothes is test to a one-tailed test True False Question 5 3 pts In reference to a Confidence Interval, which are true All the answers are correct The larger the level of alpha, the smaller the Bound of Error (BOE) The larger the level of alpha, the larger the Confidence Coefficient The larger the level of alpha, the larger the standard deviation Question 8 3 pts...

  • One cable company claims that it has excellent customer service. In fact, the company advertises that...

    One cable company claims that it has excellent customer service. In fact, the company advertises that a technician will arrive within 35 minu a service call is placed. One frustrated customer believes this is not accurate, claiming that it takes over 35 minutes for the cable technician The customer asks a simple random sample of 4 other cable customers how long it has taken for the cable technician to arrive when they ha for one. The sample mean for this...

  • Different hotels in a certain area are randomly selected, and their ratings and prices were obtained...

    Different hotels in a certain area are randomly selected, and their ratings and prices were obtained online. Using technology, with x representing the ratings and y representing price, we find that the regression equation has a slope of 140 and y-intercept of -391. Complete parts (a) and (b) below. a. What is the equation of the regression line? Select the correct choice below and fill in the answer boxes to complete your choice. O A y= X OB x OC....

  • 10. The owner of a company has asked you to conduct an evaluation of the customer...

    10. The owner of a company has asked you to conduct an evaluation of the customer satisfaction ratings to see if the company continues to provide customers with customer service that ranks above average. To be considered above average the average customer satisfaction score has to be above 7. Suppose a random sample of 60 customers is taken from a population to evaluate customer satisfaction. The sample mean is 7.25. The sample standard deviation is 1.05. The population mean is...

  • Please have the correct answer One cable company claims that it has excellent customer service. In...

    Please have the correct answer One cable company claims that it has excellent customer service. In fact, the company advertises that a technician will arrive within 30 minutes after a service call is placed. One frustrated customer believes this is not accurate, claiming that it takes over 30 minutes for the cable technician to arrive. The customer asks a simple random sample of 25 other cable customers how long it has taken for the cable technician to arrive when they...

  • This question is based on Ch10, but we can solve it using our knowledge from Ch9....

    This question is based on Ch10, but we can solve it using our knowledge from Ch9. In Ch 8, we created confidence intervals to test whether the means differed in a statistically significant manner between two independent (unrelated) populations, like males and females. The sample point estimator in the confidence interval was the difference in the sample means between the 2 samples (xbar - ybar). We created a confidence interval of the form: (xbar-ybar) +/- (Zα/2)[standard error of (xbar-ybar)] We...

  • To compare the dry braking distances from 30 to 0 miles per hour for two makes...

    To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a safety engineer conducts braking tests for 35 models of Make A and 35 models of Make B. The mean braking distance for Make A is 42 feet. Assume the population standard deviation is 4.6 feet. The mean braking distance for Make B is 43 feet. Assume the population standard deviation is 4.2 feet. At a = 0.10, can the engineer support...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT