Steps in Hypothesis Testing: Videos & Practice Problems

i) $H_0:\tau =15$; $H_a:\tau >15$

ii) Fail to reject $H_0$. At the $5\%$ significance level, there is insufficient evidence to conclude that the true median daily calls exceeds $15$.

i) $H_0:\tau =15$; $H_a:\tau \ne 15$

ii) Reject $H_0$. At the $5\%$ significance level, there is sufficient evidence to conclude that the true median daily calls is $15$.

i) $H_0:\tau =15$; $H_a:\tau \ne 15$

ii) Fail to reject $H_0$. At the $5\%$ significance level, there is insufficient evidence to conclude that the true median daily calls is $15$.

i) $H_0:\tau =15$;

ii) Fail to reject $H_0$. At the $5\%$ significance level, there is insufficient evidence to conclude that the true median daily calls is less than $15$.