According to a national survey, 16% of U.S. adults use the Internet to make telephone calls. In a random survey of 100 adults, what is the probability that at most 20 of them use the internet to make telelphone calls?

Question

According to a national survey, 16% of U.S. adults use the Internet to make telephone calls.  In a random survey of 100 adults, what is the probability that at most 20 of them use the internet to make telelphone calls?

campbell_st · Answer

looks like binomial probability to me... 

is that the topic..?

anonymous · Answer

According to a national survey, 92% of U.S. dog owners consider their pets to be members of the family.  In a random survey of 150 dog owners, what is the probability that at most 132 of them consider their pets to be members of the family?  and yes that is what it is I just don't now how to do them in my calculator.