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a sample of 159 randomly selected students, found that the proportion of students planning to travel...

a sample of 159 randomly selected students, found that the proportion of students planning to travel home for thanksgiving is 0.72. What is the standard deviation of the sampling distribution? round to 3 decimal digits.
Math   Statistics-And-Probability   
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Answer #1

Solution:

Given that,

n = 159

= 0.72

1 - = 1 - 0.72 = 0.28

=   = 0.72

= ( 1 - ) / n

=  0.72 * 0.28 / 159

= 0.0356

The standard deviation of the sampling distribution =0.036

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