Question: (CO 1) In a normally distributed data set with a mean of 22 and a standard deviation of 4.1, what percentage of the data would

(CO 1) In a normally distributed data set with a mean of 22 and a standard deviation of 4.1, what percentage of the data would be between 17.9 and 26.1?

A.95% based on the Empirical Rule

B.99.7% based on the Empirical Rule

C.68% based on the histogram

D.68% based on the Empirical Rule

CO 1) To gather information on customer satisfaction, a researcher goes into each store and interviews six randomly selected customers at each store. This sampling technique is called:

A.Stratified

B.Random

C. Cluster

D.Convenience

(CO 1) What is the standard deviation and its meaning in the sample of customer ages? 48, 76, 30, 39, 51, 40, 63, 66, 27

A.16.8 which means that many of the ages will be around the square of this value

B.15.8 which means that many of the ages will be within half of this value of the average age

C.16.8 which means that many of the ages will be within this value of the average age

D.15.8 which means that many of the ages will be around this value

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