a) Find the values of aa and bb. (b) Find the probability at least two students order groceries online in a week. (c) Find the expected number of students to order groceries online in a one quarter (12 weeks) for our class size of 130.

Q: The probability that Mark will pass his statistics test is 0.65. Find the probability that he will…

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Q: Lloyd buys a bag of cookies that contains 7 chocolate chip cookies, 5 peanut butter cookies, 5 sugar…

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Q: The probability that John hits a target is p =1/4. He fires n = 6 times. Find the probability that…

A: Answer -  The probability that John hits a target is p =1/4. He fires n = 6 times.…

Q: The probability that an iPOD’s battery will need replacing within two years is 21%. A store sold 15…

A:

Q: A spinner is divided into 4 equal sections. The probability of landing on A is 1/4.   Brandy spins…

A: Given that: n=the number of trials=24 p=probability of landing on A= 1/4   Each spin is independent…

Q: A nervous kicker usually makes 72% of his first field goal attempts. If he makes his first attempt,…

A: From the provided information, P (makes first field goal attempt) = 0.72 P (Makes second attempt|…

Q: Alex makes 20% of his hockey goals that he attempts.  For a practice, he likes to shoot goals at the…

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Q: A nervous kicker usually makes 64% of his first field goal attempts. If he makes his first attempt,…

A: Given that the probability of making the first kick is= 64% =0.64 When he made the first kick then…

Q: The probability of flipping a coin and having it land on heads is 1/2.   If a coin is tossed 4…

A: The number of coins flipped is 1. The probability of getting head is

Q: a shooting game, the probability that Botoy and Toto will hit a target is 2/3 and ¾ respectively.…

A:

Q: Find the probability of the indicated event if P(E) = 0.20 and P(F) = 0.45. Find P(E or F) if P(E…

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Q: 80% of new car buyers choose automatic transmissions. For a group of 10 new car buyers, find the…

A: Given that, 80% of new car buyers choose automatic transmissions. Sample size, n = 10

Q: A basketball player averages 65% in a free-throw line. Find the probability that he misses one of…

A: A basketball player averages 65% in a free-throw line. Find the probability that he misses one of…

Q: Find the probability of the indicated event if ​P(E)=0.35 and ​P(F)=0.45. Find​ P(E or​ F) if​ P(E…

A: Given that p(E)=0.35

Q: Find the probability of the indicated event if P(E) = 0.40 and P(F)=0.50. Find P(E or F) if P(E and…

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Q: An earth-conscious clothing store offers a 15% discount if you bring in a bag full of old clothing…

A: From the given information, n=20 and p=0.69.

Q: The probability of a number cube landing on 5 is 1/6.  If a number cube is tossed 72  times, how…

A: Given that: n=the number of trials=72 p=probability of landing on 5= 1/6   Each toss is independent…

Q: The probability that a certain kind of component will survive a shock test is ¾. Find the…

A: Binomial distribution: A discrete r.v. X taking values 0,1,2,3, …., n is said to follow a binomial…

Q: Justin has a bird feeder which gets visited by an average of 18 birds every 2 hours during daylight…

A: Bird feeder gets an average of 18 birds every 2 hours. The probability that bird feeder will be…

Q: The probability of an event happening exactly twice in 4 trials is 18 times the probability of it…

A: The probability of an event happening exactly twice in 4 trials is 18 times the probability of it…

Q: A swim team consists of 5 boys and 4 girls. A relay team of 4 swimmers is chosen at random from the…

A: Solution-: Given: Number of boys=5 and Number of girls=4    Total=5 (Boys) +4( girls)=9  A relay…