91Ó°ÊÓ

Two-sided test The one-sample t statistic from a sample of $n=25$observations for the two-sided test of $H_0:\mathrm{μ}=64;H_a:\mathrm{μ}≠64$has the value$t=-1.12$.

(i) Table $B$: Using Table $B$, we get $0.05<p-value<0.1$

(ii) Calculator: Performing the test with significance level $0.05$,

Decision: There is not enough evidence to reject$Hâ‚\P Ä$ at the significance level $0.05$, because your p-value is greater than $0.05$.

Performing the test with significance level $0.1$.

Decision: There is not enough evidence to reject$Hâ‚\P Ä$ at the significance level $0.1$, because your p-value is greater than $0.1$.

Conclusion: Fail to reject $H_0$at both levels.

Redo part (a) using an alternative hypothesis of $H_a:\mathrm{μ}<64$

(i) Table $B$: Using Table $B$, we get $0.05<p-value<0.1$

(ii) Calculator: Performing the test with a significance level$0.05$,

Decision: There is not enough evidence to reject$Hâ‚\P Ä$ at the significance level $0.05$, because your p-value is greater than $0.05.$

Performing the test with a significance level $0.1$.

Decision: There is not enough evidence to reject$Hâ‚\P Ä$ at the significance level $0.1,$because your p-value is greater than $0.1$.

Conclusion: Fail to reject $H_0$at both levels.