esting: H0:μ≥13H0:μ≥13 H1:μ<13H1:μ<13 Your sample consists of 43 values, with a sample mean of 12.9. Suppose the population standard deviation is known to be 2.01. a) Calculate the value of the test statistic, rounded to 2 decimal places. z=z= b) At α=0.02α=0.02, the rejection region is z>2.33z>2.33 z<-2.33z<-2.33 z<-2.33orz>2.33z<-2.33orz>2.33 z>2.05z>2.05 z<-2.05z<-2.05 z<-2.05orz>2.05z<-2.05orz>2.05 c) The decision is to Fail to reject the null hypothesis Accept the null hypothesis Accept the alternative hypotheis Reject the null hypothesis

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