Question

In a Gallup poll of randomly selected​ adults, 66% said that they worry about identity theft. For a group of 1013​ adults, the mean of those who do not worry about identify theft is closest to​ ________.

Answer 1

Answer: 669

Explanation:

Given, In a Gallup poll of randomly selected​ adults, 66% said that they worry about identity theft.

i.e. The proportion of adults said that they worry about identity theft. (p) = 0.66

Sample size : n= 1013

Then , Mean for the sampling distribution of sample proportion = np

= (1013) × (0.66)

= 668.58 ≈ 669 [Round to the nearest whole number]

Hence, the mean of those who do not worry about identify theft is closest to​ 669 .