Question

Data was collected from a random sample of 20 customers at both US Bank and TCF Bank. The mean wait time at both banks was 5 minutes. The Standard Deviation for the TCF Bank wait time is s = .476 minutes. The Standard Deviation for the US Bank wait times is s = 82 minutes

Compare the two standard deviations and write a sentence explaining what the difference in standard deviations means if you are a customer waiting in line at either bank. (Note: I can see that the standard deviation for TCF is lower than that of US Bank…tell me more than that).    

3 . The weights (in pounds) of 30 newborn babies are listed below.

                        5.5    5.7    5.8    6.0    6.1    6.1    6.3    6.4    6.5    6.6

                        6.7    6.7    6.7    6.9    7.0    7.0    7.0    7.1    7.2    7.2

                        7.4    7.5    7.7    7.7    7.8    8.0    8.1    8.1    8.3    8.7

a Find ?_". Show your work.

b Explain what ?_" tells us about the weights of the newborn babies.

Answer 1