The television show Pretty Betty has been successful for many years. That show recently had a share of 31, which means, that among the TV sets in use, 31% were tuned to Pretty Betty. An advertiser wants to verify that 31% 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. 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 31% share value is wrong? (Hint: Is the occurrence of at most one household tuned to Pretty Betty unusual?) yes, it is wrong O no, it is not wrong

Public Opinion reported that 5% of Americans are afraid of being alone in a house at night. If a random sample of 20 Americans is selected, find the probability that less than 3 people in the sample who are afraid of being alone at night.

It has been determined that there is a 75% chance of a person using their seatbelt when sitting in the back seat of a car. If 8 people leave a party and take cabs home, which of the following would be used to find the probability that 6 of them use their seatbelt when sitting in the back seat?

Just before a referendum on a school​ budget, a local newspaper polls 356 voters to predict whether the budget will pass. Suppose the budget has the support of 53% of the voters. What is the probability that the​ newspaper's sample will lead it to predict​ defeat?

There is about a 10% chance of being left- handed. If there are 25 students in a class, find the probability that no more than 3 are left-handed.

In a recent year, speaking characters in movies were 68.2% male. What is the probability of randomly selecting a character with a speaking part and getting a female? What should be the value of that probability?

The probability of finding a gold card is 0.03. What is the probability that 2 out of 25 randomly selected cards are a gold card?