7 8 9 10 11 12 13 14 P(X) 0.03 k 0.15 0.20 0.19 2k 0.10 0.07 0.02 a. Find the probability that the number of days a carpenter cannot work is at most 11 days. b. Find the probability that the number of days a carpenter cannot work is at least 9 days.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
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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The number X of days in the winter months that a carpenter cannot work because of the weather has
the probability distribution of:

7
8
9
10
11
12
13
14
P(X)
0.03
k
0.15
0.20
0.19
2k
0.10
0.07
0.02
а.
Find the probability that the number of days a carpenter cannot work is at most 11 days.
b. Find the probability that the number of days a carpenter cannot work is at least 9 days.
Transcribed Image Text:7 8 9 10 11 12 13 14 P(X) 0.03 k 0.15 0.20 0.19 2k 0.10 0.07 0.02 а. Find the probability that the number of days a carpenter cannot work is at most 11 days. b. Find the probability that the number of days a carpenter cannot work is at least 9 days.
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