How many TVs are there in your household? was one of the questions on a questionnaire sent

Question:

€œHow many TVs are there in your household?€ was one of the questions on a questionnaire sent to 5000 people in Japan. The collected data resulted in the following distribution:

a. What percentage of the households have at least one television?
b. What percentage of the households have at most three televisions?
c. What percentage of the households have three or more televisions?
d. Is this a binomial probability experiment? Justify your answer.
e. Let x be the number of televisions per household. Is this a probability distribution? Explain.
f. Assign x _ 5 for €œ5 or more€ and find the mean and standard deviation of x.