Question

You are interested in on-the-job anxiety among police officers and want to empirically test if the...

You are interested in on-the-job anxiety among police officers and want to empirically test if the shift they work influences their anxiety. You hypothesize that there is a difference in anxiety on the job between police officers who work FIRST shift and police officers who work THIRD shift. You collect data from a large random sample of officers from both shifts. You find that the average on-the-job anxiety for officers who work FIRST shift is 12.8 (std dev = 2.76), whereas the average for officers who work THIRD shift is 8.8 (std dev = 2.85). Your obtained value is 12.461. The critical t value is 1.97 at the .05 level of significance. You decide to:

a.

Reject the null hypothesis that there is no difference between the on-the-job anxiety of FIRST and THIRD shift police officers based on a one-tailed negative test.
b.

Reject the null hypothesis that there is no difference between the on-the-job anxiety of FIRST and THIRD shift police officers based on a one-tailed positive test.
c.

Reject the null hypothesis that there is no difference between the on-the-job anxiety of FIRST and THIRD shift police officers based on a two-tailed nondirectional hypothesis.
d.

Fail to reject the null hypothesis that there is no difference between the on-the-job anxiety of FIRST and THIRD shift police officers based on a two-tailed nondirectional test.
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Ans- C]

Reject the null hypothesis that there is no difference between the on-the-job anxiety of FIRST and THIRD shift police officers based on a two-tailed nondirectional hypothesis.

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 national police organization is lobbying congress for funding to hire more police officers in cities...
A national police organization is lobbying congress for funding to hire more police officers in cities nationwide. One of its arguments is that officers, on average, work significantly longer than full time duty assuming full time is u=40 hours per week. A sample of n=9 officers from a medium sized city had the following work hours last week. 43, 45, 48, 41, 45, 50, 50, 53, 48 Do these data support the claim of the national police group? PLEASE SHOW...
A community psychologist selects a sample of 16 local police officers to test whether their physical...
A community psychologist selects a sample of 16 local police officers to test whether their physical endurance is better than the median score of 72. She measures their physical endurance on a 100-point physical endurance rating scale. Performance Scores 79 56 86 87 75 83 89 92 95 90 85 73 76 70 52 64 Based on the data given above, compute the one-sample sign test at a 0.05 level of significance. x = 0.05 State whether to retain or...
A local state agency wants to decrease unemployment in its county, so it increases career education...
A local state agency wants to decrease unemployment in its county, so it increases career education and placement services. To see if there efforts are useful they compared 2 samples of individuals in the same industry who were unemployed 2 years ago. The first random sample are people who did not utilize these services and the second random sample are people who did utilize these services. They compared the number of months each sample was unemployed. The statistics for both...
In one of your classes, the professor told you that average GDP among industrialized countries is...
In one of your classes, the professor told you that average GDP among industrialized countries is $14,200 (14.2 in $1000s). You believe the information your professor has is incorrect and outdated, so you decide to collect your own data. The results of a sample reveal that the average GDP per capita (in $1000s) among 123 industrialized countries is calculated to be 13.6 with a standard error of .45. (a) If you hypothesize that your professor is incorrect and that average...
A new operator was recently assigned to a crew of workers who perform a certain job....
A new operator was recently assigned to a crew of workers who perform a certain job. From the records of the number of units of work completed by each worker each day last month, a sample of size five was randomly selected for each of the two experienced workers and the new worker. At the α = .05 level of significance, does the evidence provide sufficient reason to reject the claim that there is no difference in the amount of...
A new operator was recently assigned to a crew of workers who perform a certain job....
A new operator was recently assigned to a crew of workers who perform a certain job. From the records of the number of units of work completed by each worker each day last month, a sample of size five was randomly selected for each of the two experienced workers and the new worker. At the α = .05 level of significance, does the evidence provide sufficient reason to reject the claim that there is no difference in the amount of...
A company wants to know if a sales campaign had any difference in net sales. They...
A company wants to know if a sales campaign had any difference in net sales. They sent out emails to randomly selected consumers and offered a coupon to shop at the store. They then compared a sample of purchases from this group to another randomly sample of purchases from customers who did not receive an offer. The statistics for both samples are as follows: Sample 1: Received Offer Sample 2: Did not Receive Offer Mean Sales (y1-bar):   135.12 Mean Sales...
Show all work 1.         For a sample of 400 correctional officers at Lucasville State Prison, a researcher...
Show all work 1.         For a sample of 400 correctional officers at Lucasville State Prison, a researcher believes there is a relationship between “years on the job” and “willingness to help raise money for adult charities.” Using the following data, test the null hypothesis at the .05 level of significance that willingness to help raise donations does not differ by length of service as a correctional officer.  In so doing, identify: (1) the research and null hypothesis, (2) the critical value needed...
1.) One tailed test or two tailed test? You are performing a hypothesis test for the...
1.) One tailed test or two tailed test? You are performing a hypothesis test for the mean sample weight of your fellow Intro to Statistics students. For your null hypothesis , the hypothesized mean weight for the entire campus student body is 165. You have no reason to know for your alternative hypothesis whether the actual mean weight for the entire student campus body is more or less than 165. So you decide to make your alternative hypothesis as not...
1. Test the claim that the proportion of men who own cats is significantly different than...
1. Test the claim that the proportion of men who own cats is significantly different than the proportion of women who own cats at the 0.1 significance level. The null and alternative hypothesis would be: H0:pM≤pFH0:pM≤pF H1:pM>pFH1:pM>pF H0:pM≥pFH0:pM≥pF H1:pM<pFH1:pM<pF H0:μM=μFH0:μM=μF H1:μM≠μFH1:μM≠μF H0:μM≤μFH0:μM≤μF H1:μM>μFH1:μM>μF H0:pM=pFH0:pM=pF H1:pM≠pFH1:pM≠pF H0:μM≥μFH0:μM≥μF H1:μM<μFH1:μM<μF The test is left-tailed two-tailed right-tailed Based on a sample of 60 men, 40% owned cats Based on a sample of 40 women, 50% owned cats positive Critical Value = [three decimal accuracy]...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT