PROBLEM VI The time taken, T seconds, to open a graphics programme on a computer is normally distributed with mean 20 and standard deviation σ. Given that P(T> 13/7 <27) = 0.8, find the value of: (a) the standard deviation, o (b) the value of k for which P(T> k) = 0.75.
PROBLEM VI The time taken, T seconds, to open a graphics programme on a computer is normally distributed with mean 20 and standard deviation σ. Given that P(T> 13/7 <27) = 0.8, find the value of: (a) the standard deviation, o (b) the value of k for which P(T> k) = 0.75.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 12PPS
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