The following information is available.

H₀ : 220

H₁ : < 220

A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis using the .025 significance level.

a.	Is this a one- or two-tailed test?
	Two-tailed test One-tailed test

b.	What is the decision rule?(Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)

H₀ when z <

c.	What is the value of the test statistic? (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)

Value of the test statistic

d.	What is your decision regarding H0?
	Reject Do not reject

e.	What is the p-value? (Round your answer to 4 decimal places.)

p-value