A sociologist randomly selects single adults for different groups of​ three, and the random variable x is the number in the group who say that the most fun way to flirt is in person. Determine whether a probability distribution is given. If a probability distribution is​ given, find its mean and standard deviation. If a probability distribution is not​ given, identify the requirements that are not satisfied.   1. Does the table show a probability​ distribution? Select all that apply. A  Yes, the table shows a probability distribution. This is the correct answer.   B. No, the random variable​ x's number values are not associated with probabilities.   C. No, the random variable x is categorical instead of numerical.   D. ​No, the sum of all the probabilities is not equal to 1.   E. No, not every probability is between 0 and 1 inclusive.   2. Find the mean of the random variable x, or does table does not show a probability distribution?    3. Find the standard deviation of the random variable x, or does table does not show a probability distribution?

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter7: Applying Fractions
Section7.6: Percents Problems
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A sociologist randomly selects single adults for different groups of​ three, and the random variable x is the number in the group who say that the most fun way to flirt is in person. Determine whether a probability distribution is given. If a probability distribution is​ given, find its mean and standard deviation. If a probability distribution is not​ given, identify the requirements that are not satisfied.
 

1. Does the table show a probability​ distribution? Select all that apply.

A  Yes, the table shows a probability distribution.
This is the correct answer.
 
B. No, the random variable​ x's number values are not associated with probabilities.
 
C. No, the random variable x is categorical instead of numerical.
 
D. ​No, the sum of all the probabilities is not equal to 1.
 
E. No, not every probability is between 0 and 1 inclusive.
 
2. Find the mean of the random variable x, or does table does not show a probability distribution? 
 
3. Find the standard deviation of the random variable x, or does table does not show a probability distribution? 
P(x) D
0.091
1
0.341
0.399
0.169
Transcribed Image Text:P(x) D 0.091 1 0.341 0.399 0.169
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