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CUNY advertises that the average class size is 35 students or less, with a standard deviation...

CUNY advertises that the average class size is 35 students or less, with a standard deviation of 8 students. QCC SGA is concerned that budget cuts have led to increased class sized and would like to test this claim. A random sample of 38 classes was selected, and the average class size was found to be 36.9 students. Using a level of significance of 0.05, can QCC SGA conclude that the average class is greater than 35 students?

a. State the null hypothesis. H0 :  µ  

b. Sate the alternative hypothesis. H1 :  µ  

c. What is the critical value?

d. State the decision rule?  

e. Calculate the test statistic.  

f. Make a decision.  

Math   Statistics-And-Probability   
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