genyjoannerubiera
02.12.2020 •
Mathematics
Suppose you and a friend are playing a game that involves flipping a fair coin 3 times. Let x = the number of times
that the coin shows heads. The probability distribution of X is shown in the table.
Number of Heads
0
1
2
3
Probability
0.125 0.375
0.375 0.125
The expected number of heads is
The standard deviation of the number of heads is
Round to three decimal places.
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