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.

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.4: Discrete Random Variables; Applications To Decision Making
Problem 2E
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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.
Does the table show a probability distribution? Select all that apply.
X
0
A. Yes, the table shows a probability distribution.
B. No, the random variable x is categorical instead of numerical.
C.
No, the random variable x's number values are not associated with
probabilities.
D. No, not every probability is between 0 and 1 inclusive.
E. No, the sum of all the probabilities is not equal to 1.
A. μ= adult(s) (Round to one decimal place as needed.)
B. The table does not show a probability distribution.
1
2
3
Find the mean of the random variable x. Select the correct choice below and, if
necessary, fill in the answer box to complete your choice.
A.
0= adult(s) (Round to one decimal place as needed.)
B. The table does not show a probability distribution.
P(x)
0.089
0.325
0.418
0.168
Find the standard deviation of the random variable x. Select the correct choice below
and, if necessary, fill in the answer box to complete your choice.
Transcribed Image Text: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. Does the table show a probability distribution? Select all that apply. X 0 A. Yes, the table shows a probability distribution. B. No, the random variable x is categorical instead of numerical. C. No, the random variable x's number values are not associated with probabilities. D. No, not every probability is between 0 and 1 inclusive. E. No, the sum of all the probabilities is not equal to 1. A. μ= adult(s) (Round to one decimal place as needed.) B. The table does not show a probability distribution. 1 2 3 Find the mean of the random variable x. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. 0= adult(s) (Round to one decimal place as needed.) B. The table does not show a probability distribution. P(x) 0.089 0.325 0.418 0.168 Find the standard deviation of the random variable x. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
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