Ted is not particularly creative. He uses the pickup line "If I could rearrange the alphabet, I'd put U and I together." The random variable x is the number of girls Ted approaches before encountering one who reacts positively. Determine whether the table describes a probability distribution. If it does, find its mean and standard deviation.
Ted is not particularly creative. He uses the pickup line "If I could rearrange the alphabet, I'd put U and I together." The random variable x is the number of girls Ted approaches before encountering one who reacts positively. Determine whether the table describes a probability distribution. If it does, find its mean and standard deviation.
x
P(x)
1
0.002
2
0.028
3
0.137
4
0.202
5
0.332
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Part 1
Find the mean μ of the random variable x. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A.
μ=enter your response here
(Round to one decimal place as needed.)
B.
The table is not a probability distribution.
Part 2
Find the standard deviation σ of the random variable x. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A.
σ=enter your response here
(Round to one decimal place as needed.)
B.
The table is not a probability distribution.
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