Question
In: Statistics and Probability
9) An advertising executive wished to compare two commercials to see which one people liked better....
9) An advertising executive wished to compare two commercials to see which one people liked better. He planned to show each commercial to a separate group of 15 people and compute the mean rating for each one, to see if there was a difference. With α=0.05, what should his rejection region be?
1.t>1.7011
2.t>2.0484
3.t<-1.7011 or t>1.7011
4.t<-2.0484 or t>2.0484
Solutions
orchestra answered 2 years agoRelated Solutions
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An auditor for a hardware store chain wished to compare the efficiency of two different auditing...
An auditor for a hardware store chain wished to compare the
efficiency of two different auditing techniques. To do this he
selected a sample of nine store accounts and applied auditing
techniques A and B to each of the nine accounts selected. The
number of errors found in each of techniques A and B is listed in
the table below:
Errors in A
Errors in B
25
11
28
17
26
19
28
17
32
34
30
25
29
29...
An auditor for a hardware store chain wished to compare the efficiency of two different auditing...
An auditor for a hardware store chain wished to compare the
efficiency of two different auditing techniques. To do this he
selected a sample of nine store accounts and applied auditing
techniques A and B to each of the nine accounts selected. The
number of errors found in each of techniques A and B is listed in
the table below:
Errors in A
Errors in B
27
13
30
19
28
21
30
19
34
36
32
27
31
31...
An auditor for a hardware store chain wished to compare the efficiency of two different auditing...
An auditor for a hardware store chain wished to compare the
efficiency of two different auditing techniques. To do this he
selected a sample of nine store accounts and applied auditing
techniques A and B to each of the nine accounts selected. The
number of errors found in each of techniques A and B is listed in
the table below:
Errors in A
Errors in B
27
13
30
19
28
21
30
19
34
36
32
27
31
31...
An auditor for a hardware store chain wished to compare the efficiency of two different auditing...
An auditor for a hardware store chain wished to compare the
efficiency of two different auditing techniques. To do this he
selected a sample of nine store accounts and applied auditing
techniques A and B to each of the nine accounts selected. The
number of errors found in each of techniques A and B is listed in
the table below:
Errors in A
Errors in B
27
13
30
19
28
21
30
19
34
36
32
27
31
31...
An auditor for a hardware store chain wished to compare the efficiency of two different auditing...
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efficiency of two different auditing techniques. To do this he
selected a sample of nine store accounts and applied auditing
techniques A and B to each of the nine accounts selected. The
number of errors found in each of techniques A and B is listed in
the table below:
Errors in A
Errors in B
25
11
28
17
26
19
28
17
32
34
30
25
29
29...
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confidence interval for the difference...
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