Groups of adults are randomly selected and arranged in groups of three. The random variable x is the number in the group who say that they would feel comfortable in a​ self-driving vehicle. 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.   a. Find the mean of the random variable x.      ​(Round to one decimal place as​ needed.) b. Find the standard deviation of the random variable x    ​(Round to one decimal place as​ needed

MATLAB: An Introduction with Applications
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Groups of adults are randomly selected and arranged in groups of three. The random variable x is the number in the group who say that they would feel comfortable in a​ self-driving vehicle. 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.

 

a. Find the mean of the random variable x.  

   ​(Round to one decimal place as​ needed.)

b. Find the standard deviation of the random variable x 

  ​(Round to one decimal place as​ needed.)

 

x
0
1
2
3
P(x)
0.358
0.448
0.168
0.026
Transcribed Image Text:x 0 1 2 3 P(x) 0.358 0.448 0.168 0.026
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