In a survey, cell phone users were asked which ear they use to hear their cell phone, and the table is based on their responses. 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. Left Right No preference P(x) D 0.636 0.304 0.060

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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In a survey, cell phone users were asked which ear they use to hear their cell phone, and the table is based on their responses. 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.
Left
Right
No
preference
P(x)
0.636
0.304
0.060
Transcribed Image Text:In a survey, cell phone users were asked which ear they use to hear their cell phone, and the table is based on their responses. 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. Left Right No preference P(x) 0.636 0.304 0.060
Does the table show a probability distribution? Select all that apply.
A. Yes, the table shows a probability distribution.
B. No, not every probability is between 0 and 1 inclusive.
C. No, the sum of all the probabilities is not equal to 1.
D. No, the numerical values of the random variable x are not associated with probabilities.
E. No, the random variable x is categorical instead of numerical.
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.
O A.
P=
(Round to one decimal place as needed.)
OB. The table does not show a probability distribution.
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:Does the table show a probability distribution? Select all that apply. A. Yes, the table shows a probability distribution. B. No, not every probability is between 0 and 1 inclusive. C. No, the sum of all the probabilities is not equal to 1. D. No, the numerical values of the random variable x are not associated with probabilities. E. No, the random variable x is categorical instead of numerical. 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. O A. P= (Round to one decimal place as needed.) OB. The table does not show a probability distribution. 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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