SOLUTION: Suppose it is known that 40% of U.S. citizens believe that there need to be stricter gun laws. A simple random sample of 120 U.S. citizens is drawn. Find the mean number of peop

Question 1155686: Suppose it is known that 40% of U.S. citizens believe that there need to be stricter gun laws. A simple random sample of 120 U.S. citizens is drawn.
Find the mean number of people in samples of size 120 who believe that there need to be stricter gun laws.
Find the standard deviation of the number of people in samples of size 120 who believe that there need to be stricter gun laws. (Round your answer to two decimal places.)
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
The mean would be np or 120*0.4=48 people
the variance is np(1-p)=48*0.6=28.8
sd = sqrt(V)=5.37 people
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