mark (2) Q3.5. (based on Problem 10.30; page 357) A random sample of size ni =...

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math Statistics-And-Probability

Answer 1

Answer #1

null hypothesis: Ho:41-42 Alternate hypothesis: Ha:-H2 for 0.05 level with two tail test critical z= 1.960 Decision rule: rej

from above p value =0.0008 (from excel: 2*(1-normsdist(3.33)) function)

since p value is significantly low, we reject null hypothesis

we have sufficient evidence to conclude that mean of two populations are not equal.

Answer 2

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