Ray is an airline inspector and completed an average of u = 10 inspections each day. The distribution of daily inspections is approximately normal with a standard deviation of o 2 inspections. For a randomly selected day, what is the probability that Ray completes less than 9 inspections? a) 0.3413 O b) 0.1587 c) 0.3085 d) 0.6915

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Ray is an airline inspector and completed an average of u = 10 inspections each day. The distribution of daily
inspections is approximately normal with a standard deviation of o 2 inspections. For a randomly selected
day, what is the probability that Ray completes less than 9 inspections?
a) 0.3413
O b) 0.1587
c) 0.3085
d) 0.6915
Transcribed Image Text:Ray is an airline inspector and completed an average of u = 10 inspections each day. The distribution of daily inspections is approximately normal with a standard deviation of o 2 inspections. For a randomly selected day, what is the probability that Ray completes less than 9 inspections? a) 0.3413 O b) 0.1587 c) 0.3085 d) 0.6915
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