7. Suppose we are testing Ho : ??-?2-21 against Ha : ?1-?2 21, where ?? and ?2 a

Question

7. Suppose we are testing Ho : ??-?2-21 against Ha : ?1-?2 21, where ?? and ?2 are respective means of two normally distributed populations. After taking a sample from each population, we have computed the observed test statistic Wobs 2.3 and the corresponding p-value PWobHo is true) 0.011. Circle one correct conclusion that can be made using the above information. level ?-0.05. dence level ? 0.01. (b) We reject Ho : ??-?2-2.1 with confi- (d) We accept Ho : ??-?2-2.1 with confi- dence level a 0.05. dence level ?-0.05.

Explanation / Answer

as p value is greater than 0.01 level ; we can not reject null hypothesis

but as p value is less than 0.05 level we can reejct it at 0.05 level

option B is correct

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