Elizabeth claims that her average typing speed is greater than87 words per minute

From recent typing trials, it is observed that Elizabeth has a sample typing speed mean of 98.9 words per minute (based on 18 trials).

Given the sample data below, determine whether to reject the null hypothesis, or fail to reject the null hypothesis and also come to a conclusion regarding the claim.

• H0:=87 words per minute; Ha:>87 words per minute
• =0.01 (significance level)
• z0=1.92
• p=0.0274