ast year a company received 50 complaints concerning carpet installation. The data in the accompanying table represents the number of days between the receipt of a complaint and the resolution of the complaint. The supervisor claims that the mean number of days between the receipt of a complaint and the resolution of the complaint is 20 days. At the 0.10 level of significance, is there evidence that the claim is not true (that is, that the mean number of days is different from 20)?
ast year a company received 50 complaints concerning carpet installation. The data in the accompanying table represents the number of days between the receipt of a complaint and the resolution of the complaint. The supervisor claims that the mean number of days between the receipt of a complaint and the resolution of the complaint is 20 days. At the 0.10 level of significance, is there evidence that the claim is not true (that is, that the mean number of days is different from 20)?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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Last year a company received 50 complaints concerning carpet installation. The data in the accompanying table represents the number of days between the receipt of a complaint and the resolution of the complaint.
The supervisor claims that the mean number of days between the receipt of a complaint and the resolution of the complaint is 20 days. At the
0.10 level of significance, is there evidence that the claim is not true (that is, that the mean number of days is different from 20)?
State the null and alternative hypotheses.
H0:
H1:
Determine the test statistic.
The test statistic is ___.the t critical is t.005,49 = 2.6800
since the t stat is more than the t critical we reject Ho
State the conclusion.
__A__ H0. There is __B__ evidence to conclude that the mean number of days is different from 20.
A: Reject or do not reject
B: sufficient or insufficient
Transcribed Image Text:Data Table
Days between receipt and resolution of complaint
64
68
55
74
82
20
27
37 135
17 14 125
25
1
26
35
23
155
128
20
107
166
17
24
39
102
92
36
34
21
5
35
29
52
29
38
10
19
10
20
17
32
25
21
26
36
60
Print
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me
2.
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