A recent CBS News survey reported that 64% of adults felt the U. S. Treasury should continue making pennies. Suppose we select a sample of 18 adults. a-1. How many of the 18 would we expect to indicate that the Treasury should continue making pennies

Complete Question

A recent CBS News survey reported that 64% of adults felt the U.S. Treasury should continue making pennies. Suppose we select a sample of 18 adults.

a-1. How many of the 18 would we expect to indicate that the Treasury should continue making pennies

a-2) What is the standard deviation?

a-3) What is the likelihood that exactly 3 adults would indicate the Treasury should continue making pennies?

a-1

a-2  

a-3

Step-by-step explanation:

From the question we are told that

  The sample size is  

  The proportion of adult that  felt the U.S. Treasury should continue making pennies is p =  0.64

 The proportion of adult that  feel otherwise is

 The mean is mathematically evaluated as

substituting values

The standard deviation is mathematically represented as

substituting values

The likelihood that 3 adult would indicate  the Treasury should continue making pennies is mathematically evaluated as

Now

substituting values

So

0.85% : )

step-by-step explanation:

answer: b

step-by-step explanation: