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
0.001
2
0.027
3
0.104
4
0.246
5
0.260
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=
​(Round to one decimal place as​ needed.)
B.
The table is not a probability distribution.
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.
σequals=
​(Round to one decimal place as​ needed.)
B.
The table is not a probability distribution.
