Suppose a bank branch, located in a commercial district, is concerned with its service during the noon-to-1 pm lunch period. The waiting times, in minutes, collected from a sample of 15 customers during this hour, are listed below. Complete parts (a) through (d) below. 4.08 5.37 3.11 5.08 4.41 2.29 3.64 3.44 4.68 6.19 0.32 5.33 6.42 6.13 3.61 a. Compute the mean and median. The mean is (Round to two decimal places as needed.) The median is (Type an integer or a decimal)
a. Compute the mean and median The mean is (Round to two decimal places as needed.) The median is (Type an integer or a decimal.) b. Compute the standard deviation, range, and coefficient of variation. Are there any outliers? Explain w The standard deviation is (Round to three decimal places as needed)
Suppose a bank branch, located in a commercial district, is concerned with its service The range is (Type an integer or a decimal.) The coefficient of variation is % (Round to two decimal places as needed.) Are there any outliers? Explain. h O A. Yes, since there is at least one data value that is less than - 3.0 or greater than +3.0 standard deviations from the mean. OB. No, since there are no data values that are less than - 3.0 or greater than +3.0 standard deviations from the mean. O C. No, since there is at least one data value that is less than - 3.0 or greater than +3.0 standard deviations from the mean.
Suppose a bank branch, located in a commercial district, is concerned with its service O C. No, since there is at least one data value that is less than -3.0 or greater than +3.0 standard deviations from the mean. OD. Yes, since there are no data values that are less than - 3.0 or greater than +3.0 standard deviations from the mean. T c. Are the data skewed? If so, how? Choose the correct response below. O A. No, the data are not skewed because the mean and median are equal O B. Yes, the data are right-skewed because the mean is greater than the median O C. No, the data are not skewed because there are no outliers. OD. Yes, the data are left-skewed because the mean is less than the median d. As a customer walks into the branch office during the lunch hour, he asks the branch
. d. As a customer walks into the branch office during the lunch hour, he asks the branch manager how long he can expect to wait. The branch manager replies, "Almost certainly less than 5 minutes." On the basis of the results of (a) through (C), evaluate the accuracy of this statement. Choose the correct response below. O A. Although both the mean and median are greater than 5 minutes, all values greater than 5 minutes have a Z scorolgreater than +3.0, thus they are outliers. This means the branch manager's statement is accurate. OB. Since the mean and median are both less than 5 minutes, the customer is likely to experience a waiting time less than 5 minutes. O C. Since the range of values is greater than 5 minutes, the customer is likely to experience a waiting time in excess of 5 minutes. O D. Since the standard deviation is less than 5 minutes, the customer is likely to experience a waiting time less than 5 minutes
Suppose a bank branch, located in a commercial district, is concerned with its service during the noon-to-1 pm lunch per
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Suppose a bank branch, located in a commercial district, is concerned with its service during the noon-to-1 pm lunch per
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