Find the P-value for a two-tailed hypothesis test with a test statistic of z = 2.14. Decide whether to reject H0 if the level of significance is ? = 0.05. 31 One distributor reports an average of 150 sales per day. You suspect that this average is not accurate, so you randomly select 35 days and determine the number of sales each day. The sample mean is 143 with a standard deviation of 15. At ???? = 0.01 :

a. State the hypotheses, and Identify the claim.

b. Find the standardized test statistic z.

c. Find the P-value.

d. Decide whether to reject the null hypothesis or not.

e. Interpret the decision in the context of the original claim.