As part of a promotion, both you and your roommate are given free cellular phones from a batch of 10 phones. Unknown to you, five of the phones are faulty and do not work. Find the probability that one of the two phones is faulty. Select one: A. 0.555556 B. 0.777778 C. 0.222222 D. 0.277778

John runs a computer software store. He counted 120 people who walked by his store in aday, 50 of whom came into the store. Of the 50, only 21 bought something in the store.Estimate the probability that a person who walks by the store will come in and buysomething. Round your answer to the nearest hundredth.

Please answer within 30min thanks.

In a large population, 52% of the people have been vaccinated. If 5 people are randomly selected, what is the probability that AT LEAST ONE of them has been vaccinated? Give your answer as a decimal to 4 places.

In a large school, it was found that 71% of students are taking a math class, 72% of student are taking an English class, and 93% of students are taking both. Find the probability that a randomly selected student is taking a math class or an English class. Write your answer as a decimal, and round to 2 decimal places if necessary. Find the probability that a randomly selected student is taking neither a math class nor an English class. Write your answer as a decimal, and round to 2 decimal places if necessary.

Eric teaches ceramics in his studio. He estimates that one 20% people who call for information about a class will sign up for the class. Last week he received nine calls. Find the probability that two of the people will sign up for class?

Orson performs 7 exercises over the span of a week. 5 of his exercises involve skipping rope. If he randomly chose 4 exercises to do on Monday, what is the probability that all of them involve skipping rope? Write your answer as a decimal rounded to four decimal places.

The probability that a person in the US has type B positive blood is 10%.  Three unrelated people in the US are selected at random.  Find the probability that all three have B positive blood.

Richard has been given a 6-question multiple-choice quiz in his history class. Each question has three answers, of which only one is correct. Since Richard has not attended the class recently, he doesn't know any of the answers. Assuming that Richard guesses on all 6 questions, find the probability that he will answer all questions incorrectly. Round your answer to the nearest thousandth.

There are 6 male students and 17 female students in a class.If you choose 2 students at random, find the probability that both are female.Answer with a fraction or give four decimal places.