A pharmacist would like to investigate the claim that a generic anti-histamine dose is more than 13 mg, on average. She decides to do a hypothesis test, at a 1% significance level. She measures 10 pills, collects the proper data, and works through the testing procedure: H0: μ=13; Ha: μ>13
α=0.01 (significance level)
The test statistic is
z0=x¯−μ0σn√=13.2−130.810√=0.79
The critical value is z0.01=2.33.
Conclude whether to reject or not reject H0, and interpret the results.

Based on this context and the null and alternative hypothesis, what type of hypothesis test should be used?

Use the curve below to show your answer. Select the appropriate test by dragging the blue point to a right-, left- or two-tailed diagram. The shaded area represents the rejection region. Then, set the critical value(s) on the x-axis by moving the purple slider on the right.