Suppose it is known that 30% of U.S. citizens believe that there need to be stricter...

Suppose it is known that 30% of U.S. citizens believe that there need to be stricter gun laws. A simple random sample of 140 U.S. citizens is drawn.

1)Determine whether the following statement is true or false.

The number of people in the sample who believe that there need to be stricter gun laws is a binomial variable.

2)Find the mean number of people in samples of size 140 who believe that there need to be stricter gun laws.

3)Find the standard deviation of the number of people in samples of size 140 who believe that there need to be stricter gun laws. (Round your answer to two decimal places.)

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Expert Solution

TOPIC:Binomial distribution.

orchestra answered 1 year ago

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