In a study of facial behavior, people in a control group are timed for eye contact in a 5-minute period. Their times are normally distributed with a mean of 182.0 seconds and a standard deviation of 53.0 seconds. Use the 68-95-99.7 rule to find the indicated quantity. a. Find the percentage of times within 53.0 seconds of the mean of 182.0 seconds. % (Round to one decimal place as needed.) b. Find the percentage of times within 106.0 seconds of the mean of 182.0 seconds. % (Round to one decimal place as needed.) c. Find the percentage of times within 159.0 seconds of the mean of 182.0 seconds. % (Round to one decimal place as needed.) d. Find the percentage of times between 182.0 seconds and 288 seconds. % (Round to one decimal place as needed.)
In a study of facial behavior, people in a control group are timed for eye contact in a 5-minute period. Their times are normally distributed with a mean of 182.0 seconds and a standard deviation of 53.0 seconds. Use the 68-95-99.7 rule to find the indicated quantity. a. Find the percentage of times within 53.0 seconds of the mean of 182.0 seconds. % (Round to one decimal place as needed.) b. Find the percentage of times within 106.0 seconds of the mean of 182.0 seconds. % (Round to one decimal place as needed.) c. Find the percentage of times within 159.0 seconds of the mean of 182.0 seconds. % (Round to one decimal place as needed.) d. Find the percentage of times between 182.0 seconds and 288 seconds. % (Round to one decimal place as needed.)
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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