Question: Testing: H0:50.3 H1: <50.3 Your sample consists of 23 values, with a sample mean of 49. Suppose the population standard deviation is known to be

Testing: H0:50.3 H1:<50.3 Your sample consists of 23 values, with a sample mean of 49. Suppose the population standard deviation is known to be 3.82. a) Calculate the value of the test statistic, rounded to 2 decimal places. z= b) At =0.08=0.08, the rejection region is

z>1.75
z<-1.41 or z>1.41
z<-1.75 or z>1.75
z<-1.75
z<-1.41
z>1.41

c) The decision is to

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

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

Type II
Type I

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