Question

Suppose you want to test the claim that $mu_1 eq mu_2$. Two samples are randomly selected from each population. The sample statistics are given below. At a level of significance of $alpha = 0.02$, when should you reject $H_0$? $n_1 = 51$, $n_2 = 38$, $ar{x}_1 = 3.5$, $ar{x}_2 = 3.9$, $sigma_1 = 0.76$, $sigma_2 = 0.51$ A. Reject $H_0$ if the standardized test statistic is less than $-1.645$ or greater than $1.645$. B. Reject $H_0$ if the standardized test statistic is less than $-1.96$ or greater than $1.96$. C. Reject $H_0$ if the standardized test statistic is less than $-2.33$ or greater than $2.33$. D. Reject $H_0$ if the standardized test statistic is less than $-2.575$ or greater than $2.575$.

          Suppose you want to test the claim that $mu_1 
eq mu_2$. Two samples are randomly selected from each population. The sample statistics are given below. At a level of significance of $alpha = 0.02$, when should you reject $H_0$?
$n_1 = 51$, $n_2 = 38$, $ar{x}_1 = 3.5$, $ar{x}_2 = 3.9$, $sigma_1 = 0.76$, $sigma_2 = 0.51$
A. Reject $H_0$ if the standardized test statistic is less than $-1.645$ or greater than $1.645$.
B. Reject $H_0$ if the standardized test statistic is less than $-1.96$ or greater than $1.96$.
C. Reject $H_0$ if the standardized test statistic is less than $-2.33$ or greater than $2.33$.
D. Reject $H_0$ if the standardized test statistic is less than $-2.575$ or greater than $2.575$.

Suppose you want to test the claim that mu1
eq mu2. Two samples are randomly selected from each population. The sample statistics are given below. At a level of significance of alpha = 0.02, when should you reject H0?
n1 = 51, n2 = 38, arx1 = 3.5, arx2 = 3.9, sigma1 = 0.76, sigma2 = 0.51
A. Reject H0 if the standardized test statistic is less than -1.645 or greater than 1.645.
B. Reject H0 if the standardized test statistic is less than -1.96 or greater than 1.96.
C. Reject H0 if the standardized test statistic is less than -2.33 or greater than 2.33.
D. Reject H0 if the standardized test statistic is less than -2.575 or greater than 2.575.

Added by Ramon P.

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