Testing: H0:32.1H0:32.1 H1:>32.1H1:>32.1 Your sample consists of 25 values, with a sample mean of 32.4. Suppose the population standard deviation is known to be 2.62. a) Calculate the value of the test statistic, rounded to 2 decimal places. z=z= b) At =0.04=0.04, the rejection region is

• z<-2.05orz>2.05z<-2.05orz>2.05
• z<-1.75orz>1.75z<-1.75orz>1.75
• z<-2.05z<-2.05
• z>2.05z>2.05
• z>1.75z>1.75
• z<-1.75z<-1.75

c) The decision is to

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

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

• Type I
• Type II