Question
In a study of facialbehavior, people in a control group are timed for eye contact in a5-minute period. Their times are normally distributed with a
In a study of facialbehavior, people in a control group are timed for eye contact in a5-minute period. Their times are normally distributed with a mean of 186.0 seconds and a standard deviation of 47.0 seconds. Use the68-95-99.7 rule to find the indicated quantity.
a. Find the percentage of times within 47.0 seconds of the mean of 186.0 seconds.
68% (Round to one decimal place asneeded.)
b. Find the percentage of times within 94.0 seconds of the mean of 186.0 seconds.
% (Round to one decimal place asneeded.
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Statistical Techniques in Business and Economics
Authors: Douglas A. Lind, William G Marchal
17th edition
1259666360, 978-1259666360
