Question Details

The television show Pretty Betty has been successful for many years. That show recently had a share of 18, meaning that among the TV sets in use, 18% were tuned to Pretty Betty. Assume that an advertiser wants to verify that 18% share value by conducting its own survey, and a pilot survey begins with 10 households have TV sets in use at the time of a Pretty Betty broadcast.

(Round answers to four decimal places.)

Find the probability that none of the households are tuned to Pretty Betty.
P(none) = 

Find the probability that at least one household is tuned to Pretty Betty.
P(at least one) = 

Find the probability that at most one household is tuned to Pretty Betty.
P(at most one) = 

If at most one household is tuned to Pretty Betty, does it appear that the 18% share value is wrong? (Hint: Is the occurrence of at most one household tuned to Pretty Betty unusual?)

• no, it is not wrong
• yes, it is wrong