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A teller at a drive-up window at a bank had the following service times (in minutes) for 20 randomly selected customers: SAMPLE 1 2 3 4 4.54.64.54.7 4.24.54.64.6 4.24.44.44.8 4.34.74.44.5 4.34.34.64.9 If the process parameters are unknown, estimate its mean and standard deviation. (That is, find the average and standard deviation of all data points at once.) Select one: a. x_bar = 4.7, s = 0.19 b. x_bar = 4.3, s= 0.0368 c. x_bar = 4.5, s = 0.0368 O d. x_bar = 4.5, s = 0.19 None of the other options. x_bar = 4.7, s = 0.0368 x_bar = 4.3, s = 0.19 e. f. g.

A teller at a drive-up window at a bank had the following service times (in minutes) for 20 randomly selected customers: SAMPLE 1 2 3 4 4.54.64.54.7 4.24.54.64.6 4.24.44.44.8 4.34.74.44.5 4.34.34.64.9 If the process parameters are unknown, estimate its mean and standard deviation. (That is, find the average and standard deviation of all data points at once.) Select one: a. x_bar = 4.7, s = 0.19 b. x_bar = 4.3, s= 0.0368 c. x_bar = 4.5, s = 0.0368 O d. x_bar = 4.5, s = 0.19 None of the other options. x_bar = 4.7, s = 0.0368 x_bar = 4.3, s = 0.19 e. f. g.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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A teller at a drive-up window at a bank had the following service times (in minutes) for 20 randomly selected customers: SAMPLE 1234 4.54.64.54.7 4.24.54.64.6 4.24.44.44.8 4.34.74.44.5 4.34.34.64.9 If the process parameters are unknown, estimate its mean and standard deviation. (That is, find the average and standard deviation of all data points at once.) Select one: O a. O b. c. O d. e. f. x_bar = 4.7, s = 0.0368 g. x_bar = 4.3, s = 0.19 x_bar = 4.7, s = 0.19 x_bar = 4.3, s= 0.0368 x_bar = 4.5, s = 0.0368 x_bar = 4.5, s = 0.19 None of the other options.
Transcribed Image Text:A teller at a drive-up window at a bank had the following service times (in minutes) for 20 randomly selected customers: SAMPLE 1234 4.54.64.54.7 4.24.54.64.6 4.24.44.44.8 4.34.74.44.5 4.34.34.64.9 If the process parameters are unknown, estimate its mean and standard deviation. (That is, find the average and standard deviation of all data points at once.) Select one: O a. O b. c. O d. e. f. x_bar = 4.7, s = 0.0368 g. x_bar = 4.3, s = 0.19 x_bar = 4.7, s = 0.19 x_bar = 4.3, s= 0.0368 x_bar = 4.5, s = 0.0368 x_bar = 4.5, s = 0.19 None of the other options.
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