Question

Consider the Ho: μ=45; n=48; s=18; α=5%. Write the rejection rule for the appropriate test statistic.

Consider the Ho: μ=45; n=48; s=18; α=5%. Write the rejection rule for the appropriate test statistic.

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Answer #1

Solution :

This is the two tailed test,  

The null and alternative hypothesis is ,

H0 :   = 45

Ha :    45

s = 18

n = 48

degrees of freedom = n - 1 = 48 - 1 = 47

= 0.05

/2 = 0.025

t/2,df = t0.025,47 =  ± 2.012

rejection region = t < -2.012 or t > 2.012

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