H0:34.7

H1:<34.7

Your sample consists of 40 values, with a sample mean of 33.1. Suppose the population standard deviation is known to be 4.01.

a) Calculate the value of the test statistic, rounded to 2 decimal places.

z= .................

b) =0.08, the rejection region is

• z <- 1.41 or z > 1.41

• z > 1.41

• z < - 1.41

• z < - 1.75

• z > 1.75
• z <- 1.75 or z > 1.75

c) The decision is to

• Accept the alternative hypotheis
• Reject the null hypothesis
• Fail to reject the null hypothesis
• Accept the null hypothesis

d) Suppose you mistakenly rejected the null hypothesis in this problem, what type of error is that?

• Type I
• Type II