before the six sigma project, sample mean (hours)=45, sample variance= 34, sample size= 10. After the...

before the six sigma project, sample mean (hours)=45, sample variance= 34, sample size= 10. After the six sigma project, sample mean=32,sample variance =30. sample time between the populations is same or not with significance level 0f 5%. all of the following are true except?

a. t value=5.14, p-value=0.000

b. t value is in rejection area

c. 95% CI for difference around (7.67,18.35)

d. All of the above choices are incorrect since we have to use wise t test since two populations are involved here

Expert Solution

so, option a, b and c are false.

So we have to use d

d. All of the above choices are incorrect since we have to use wise t test since two populations are involved here

orchestra answered 2 years ago

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