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Point)A survey of Amazon com shoppers reveals Ihe following probability distribution of the number of books per hit:322 201/0,072 097/ 028/ 022/0.009 0.249Find the ...

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Point)A survey of Amazon com shoppers reveals Ihe following probability distribution of the number of books per hit:322 201/0,072 097/ 028/ 022/0.009 0.249Find the following probabilities:What is the probability that an Amazon com visitor will buy four books?ProbabilltyWhat iS the probability that an Amazon com visitor will buy eight books?ProbabilityWhat is the probability that an Amazon com Visitor will not buy any books?ProbabilityWhat Is the probability thal an Amazon com visitor will buy ai

point) A survey of Amazon com shoppers reveals Ihe following probability distribution of the number of books per hit: 322 201/0,072 097/ 028/ 022/0.009 0.249 Find the following probabilities: What is the probability that an Amazon com visitor will buy four books? Probabillty What iS the probability that an Amazon com visitor will buy eight books? Probability What is the probability that an Amazon com Visitor will not buy any books? Probability What Is the probability thal an Amazon com visitor will buy ai least one book? Probability



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Ebooks According to a survey, $56 \%$ of school $(\mathrm{K}-12)$ libraries in the United States do not carry ebooks. Of these $56 \%, 8 \%$ do not plan to carry ebooks in the future. Find the probability that a randomly selected school library does not carry cbooks and does not plan to carry ebooks in the future. (Source School Library Journal)

Well, this question we continue use tree dining room in the exercise 48 that you are giving directly. The question is, what's the probability that he was she also reader, Given that he was, she has to read three or more book. So we right the condition or former bold. He ask the probability that the person who owns the Raider eat Yes, given that he was, she read more than three book and based on the condition of formula, we have this equals two probable that he e yes, I hav e ranger and read Monastery book the ride by the probable that he read more necessary. Boog. The new Marine highest you cause to you can see from tree diagram. The person has it reader and read more than three. Book is this giant, So the probability is there a point. 12 times they were 120.43 divided by the probability that person remoteness re book. It's a year way she'll have to component. Ah, the 1st 1 Yes, ah person, Happy Reader and Rihanna's Rebook, and the 2nd 1 is the person didn't how the reader but read War Ministry book. So the probability that the people rely on a storybook Hideous. They were pulling 12 time 120.43 plus no 0.88 times. Zero point won't one. This approximately equals Todo point astri for 77

In this problem. Suppose we have eight science books and nine math books, and we randomly select seven books out of them on what is the probability that we have three science bits and four math books? Um, so the probability Oh, this result equals the number off. Favorable results divided by the total number of possible are the possible results. So the probability of having three signs books and form US books equals now the the total number of all the possible results equals, um 17. Choose seven. Because we have 17 books in total on the numerator should be here. We do this in two steps. Um, the first step would be to choose three science books out of eight, so this should be eight. Choose three. Now, the second step is to choose for math books out of nine, and the first step on the second are independent. So, um, we multiply the two results, so this is nine choose for, and the result is 56 times 126 divided by, and the final result goes to point 363

For its own. This question here they tell us that the probability they want of being, ah, hardback, given that it's illustrated, is equal to 0.40 And remember, we have to use the equation on this one. This is be given a so remember, the probability of be given a is equal to the probability of A and B divided by the probability of just a So they've given us the probability of it being hard, back and illustrated. So we know that this here, this 0.40 is equal to the probability that it's hard, back and illustrated, which they give us is 0.2, and then they ask us for Hey, what's the probability that it's illustrated and so here to solve? You'd multiply both by probability of illustrated and divide by 0.4. So I get. The probability of illustrated is equal to 0.2, divided by 0.4, which is the same thing as 1/2 or a 0.5 or 50%

For this problem part A asks us To know what is the probability of three people buying ovens if we know that the probability of two people buying ovens is 40. So let's write down the information that we already have. We know that the probability of two people Buying Ovens .40. So we want to find the probability of three people mind opens, So we would do 1- the probability of two people buying Evans, which would be one minus 10.4, Which equals .6. For the second problem, we want to know the probability of somebody buying an electric and a gas. This is really simple. We know that the probability of somebody buying an electric over A gas is .007. While the other probability is 1.04 for gas. So all we do is do one that prevalence because we know the probability of that already. And we want to find the probability of actually is selling at least one of each type. So we would end up getting .889


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