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conrad136 conrad136
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3 weeks ago
Use the following to answer the questions below:

An insurance agent is interested in knowing if car crashes are more likely to occur on some days of the week than others. She selects a random sample of 250 insurance claims involving car crashes. Computer output from her chi-square test is provided.


Category
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Test
Observed
26
36
38
39
37
42
32

Proportion
0.142857
0.142857
0.142857
0.142857
0.142857
0.142857
0.142857

Expected
35.7143
35.7143
35.7143
35.7143
35.7143
35.7143
35.7143
Contribution
to Chi-Sq
 2.64229
0.00229
0.14629
 0.30229
0.04629
???????
0.38629
N
250
DF
6
Chi-Sq
4.632
P-Value
0.592


Test, at the 5% level, if there is evidence that car crashes are not equally like to occur on all days of the week. Include all details of the test.
Textbook 
Statistics: Unlocking the Power of Data

Statistics: Unlocking the Power of Data


Edition: 3rd
Authors:
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moraamoraa
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