Seventeen of the 50 digital video recorders (DVRs) in an inventory are known to be defective. What is the probability that a randomly selected item is defective? The probability is (Type an integer or a decimal. Do not round.)

A group of people were asked if they had run a red light in the last year. 278 responded "yes", and 677 responded "no".Find the probability that if a person is chosen at random, they have run a red light in the last year.  (Enter answer as decimal rounded to 2 places if necessary)

A database system assigns a 32-character ID to each record, where each character is either a number from 0 to 9 or a letter from A to F. Assume that each number or letter being selected is equally likely. Find the probability that at least 20 characters in the ID are numbers. Use Excel to find the probability. Round your answer to three decimal places.

A cooler contains 100 ice cream bars. There are 30 Vanilla​ bars, 20 Mint Chocolate Chip​ bars,10 Chocolate​ bars, and 40 Rocky Road bars. If one bar is selected at random from the​ cooler, determine the probability that the bar selected is Vanilla​, Chocolate​, or Rocky Road.

In a large population, 63 % of the people have been vaccinated. If 3 people are randomly selected, what is the probability that AT LEAST ONE of them has been vaccinated?Give your answer as a decimal (to at least 3 places) or fraction

Consider a jar of marbles that contains 5 blue, 3 red, 8 green, and 7 yellow marbles. Select a marble at random and then replace it in the jar. Find the probability that you select a green marble for the first time on the first or third or fifth attempt.

A card is drawn from a​ well-shuffled deck of 52 cards. Find the probability that the card is a black card or a 5.

Please answer

34% of Americans report at some point having worn a fitness tracker such as a Fitbit or smartwatch. If 15 Americans are randomly picked, find the probability that exactly 5 have worn a fitness tracker at some point. Submit the answer as a decimal value rounded to the nearest ten-thousandth.

If you are dealt 3 cards from a shuffled deck of 52 cards, find the probability of getting one queen and two kings. The probability is (Round to six decimal places as needed.)