2. For a population with u = 40 and o = 5, c following X values: %3D a. X=41 z= b. X=47 C. X=33 z= d. X= 28
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- A data set includes data from student evaluations of courses. The summary statistics are nequals=8585, x overbarxequals=3.423.42, sequals=0.540.54. Use a 0.010.01 significance level to test the claim that the population of student course evaluations has a mean equal to 3.503.50. Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim.A machine is set to fill the small-size packages of M&M candies with 56 candies per bag. A sample revealed four bags of 56 candies, two bags of 57 candies, two bags of 55 candies, and three bags of 58 candies. To test the hypothesis that the mean candies per bag is 56, how many degrees of freedom are there?