use p-value and z-test for hypotheses testing currently, the fastest rat killer chemical (chemical A) kills a rat in an average time of 4 seconds. another scientist believes that his chemical kills faster than the previous one. so, he conducted a study and the results are as follows: the standard deviation is 0.78 and the alpha is 0.05 (n=30)

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use p-value and z-test for hypotheses testing

currently, the fastest rat killer chemical (chemical A) kills a rat in an average time of 4 seconds. another scientist believes that his chemical kills faster than the previous one. so, he conducted a study and the results are as follows:

the standard deviation is 0.78 and the alpha is 0.05 (n=30)

3,8
6,5
5,8
5,4
4,1
4,6
4,7
4,0
5,0
6,0
4,2
4,3
6,2
5,2
4,8
6,4
5,8
4,6
5,2
4,9
5,1
5,7
4,6
3,9
4,0
4,7
5,4
4,8
4,2
3,9
Transcribed Image Text:3,8 6,5 5,8 5,4 4,1 4,6 4,7 4,0 5,0 6,0 4,2 4,3 6,2 5,2 4,8 6,4 5,8 4,6 5,2 4,9 5,1 5,7 4,6 3,9 4,0 4,7 5,4 4,8 4,2 3,9
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