Suppose a random variable K has the following distribution: k 2 4 6 8 P(k) 0.1 a b 0.4 1. Find the value of a and b if the mean of k equals 6. 2. What is the value of the cumulative distribution function at 6? 3. What is the value of standard deviation ?

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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Suppose a random variable K has the following distribution:
k
2
4
6
8
P(k)
0.1
a
b
0.4
1. Find the value of a and b if the mean of k equals 6.
2. What is the value of the cumulative distribution function at 6?
3. What is the value of standard deviation ?
Transcribed Image Text:Suppose a random variable K has the following distribution: k 2 4 6 8 P(k) 0.1 a b 0.4 1. Find the value of a and b if the mean of k equals 6. 2. What is the value of the cumulative distribution function at 6? 3. What is the value of standard deviation ?
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