Steps in Hypothesis Testing: Videos & Practice Problems

i) $H_0:\tau =45$; $H_a:\tau >45$

ii) Reject $H_0$. At the $5\%$ significance level, there is sufficient evidence to support the director’s claim that the median ER wait time exceeds $45$ minutes.

i) $H_0:\tau =45$; $H_a:\tau \ne 45$

ii) Reject $H_0$. At the $5\%$ significance level, there is sufficient evidence to support the director’s claim that the median ER wait time is $45$ minutes.

i) $H_0:\tau =45$; $H_a:\tau \ne 45$

ii) Fail to reject $H_0$. At the $5\%$ significance level, there is insufficient evidence to support the director’s claim that the median ER wait time is $45$ minutes.

i) $H_0:\tau =45$;

ii) Fail to reject $H_0$. At the $5\%$ significance level, there is sufficient evidence to support the director’s claim that the median ER wait time is less than $45$ minutes.