1.A local company wants to evaluate their quality of service by surveying their customers. Their budget limits the number of surveys to 100. What is their maximum error of the estimated mean quality for a 95% level of confidence and an estimated standard deviation of 10?

A.1.9404

B.1.96

C.3.92

D.10%

2.A machine is set to fill the small-size packages of M&M candies with 72 candies per bag. A sample revealed four bags of 71, one bags of 75, two bag of 76, and three bags of 77. To test the hypothesis that the mean candies per bag is 74, how many degrees of freedom are there?

Group of answer choices

A.11

B.4

C.10

D.9

3.The average cost of tuition plus room and board for a small private liberal arts college is reported to be $9,500 per term, but a financial administrator believes that the average cost is higher. A study conducted using 350 small liberal arts colleges showed that the average cost per term is $9,845. The population standard deviation is $1,200. Let = 0.05. Based on the computed test statistic or p-value, what is our decision about the average cost?

Group of answer choices

A.Equal to $9,500

B.Greater than $9,500

C.Less than $9,500

D.Not equal to $9,500

4.Two samples, one of size 33 and the second of size 32, are selected to test the difference between twoindependent population means. How many degrees of freedom are used to find the critical value? Assume the population standard deviations are unknown but equal.

Group of answer choices

A.65

B.64

C.63

D.33