Steps in Hypothesis Testing: Videos & Practice Problems

i) $H_0:\tau =30$; $H_a:\tau >30$

ii) Fail to reject $H_0$. At the $5\%$ significance level, there is insufficient evidence to conclude that the true median delivery time exceeds $30$ minutes.

i) $H_0:\tau =30$; $H_a:\tau \ne 30$

ii) Reject $H_0$. At the $5\%$ significance level, there is sufficient evidence to conclude that the true median delivery time differs from $30$ minutes.

i) $H_0:\tau =30$; $H_a:\tau \ne 30$

ii) Fail to reject $H_0$. At the $5\%$ significance level, there is insufficient evidence to conclude that the true median delivery time differs from $30$ minutes.

i) $H_0:\tau =30$;

ii) Fail to reject $H_0$. At the $5\%$ significance level, there is insufficient evidence to conclude that the true median delivery time is less than $30$ minutes.