STATS Problems with Solution

STATS Problems with Solution

Question A recent CBS News survey reported that 56 percent of adults felt the U.S. Treasury should continue making pennies.

Picture


Suppose we select a sample of 10 adults.


(a-1) How many of the 10 would we expect to indicate that the Treasury should continue making pennies? (Round your answer to 2 decimal places.)


Expected adults


(a-2) What is the standard deviation? (Round your answer to 4 decimal places.)


Standard deviation


(b) What is the likelihood that exactly 3 adults would indicate the Treasury should continue making pennies? (Round your answer to 4 decimal places.)


Likelihood


(c) What is the likelihood at least 3 adults would indicate the Treasury should continue making pennies? (Round your answer to 4 decimal places.)