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Native American Ceremonies Exercise 60 of the previous section presented a survey of families participating in a pow-wow in Arizona. Use the information given in that exercise to find each probability.a. A randomly chosen family brought costumes and food.b. A randomly chosen family brought crafts, but neither food nor costumes.c. A randomly chosen family brought food or costumes.

a. The probability that a randomly chosen family brought costumes and food is 0.26b. The probability that a randomly chosen family brought crafts but neither food nor costumes is 0.053c. The probability that a randomly chosen family brought food or costumes is 0.8

Calculus 2 / BC

Chapter 7

Sets and Probability

Section 3

Introduction to Probability

Sequences

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Lectures

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Because there are more tha…

07:07

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06:09

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01:31

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or the fist question. Saiz. What is the probability that you will get three mills and two women? So this will be equal to off course. We are selecting. We've got 10 females and we're selecting three or with 10 males were selecting three. And we also have 10 females, Andrea selecting to out off the same or five that we're selecting. Then we divide by selecting five people from trendy. Then this will be equal to while under the Trinity multiplied by 45 define did by 155 little full, which is equal to 0.3483 Okay, so this is our A. Then I will be What is the probability off getting three meal? I'll just call them, am I and to Ramos to pope. So this would be We are selecting from six me walks and we are selecting three. And from the foremost we're selecting two from mine. And this the symbol Spence is selecting five people from 20 which is that we foreign worked it out. We cannot repeat it and this will be equal to out. Just simplify with your calculator. Then you'll get the little point. Ah zero for 644 then the sea. What is the probability off getting true meal and true Hooper? I could just call it H and one problem. Get a total low five that this will be equal to selecting from six through me walks and selecting from five home pas and we are selecting two and we're also selecting from the pomace were with nine homers India selecting one so all over 20 or selecting five from 20 into infinite 20 Doubters 15 five settled folk and this will be equal true Just put it in your calculator It's is it open to settle 871 and next to one toe do d de se suf to workouts the probability offer to mule True who buzz and to for most all right, remember we're selecting a committal five So our symbol is five So this gives us a total of six. So this is an impossible event because we're selecting only from the symbol in decembre for five and then e ah find the probability Ah, where is my Yeah, that more women than men. Okay, so want to find the probability off more women than men so more women than men means that we can have three women. Uh oh, we can have. All right, let me just put it. Ah, and four. So we can have three women and two men now, the fifth kids. Oh, get in the air for women and one man. And lastly, we can have five women and is a little man. So those are the possibilities that we're going to wake, So this will be equal truth. Ah, selecting three women for until times selecting. Ah, two men from 10. That's the first kiss. All. Then this one will be divided by 15 five little form. Oh, is plus four women and one men. So this one will be in selecting from 10. When you went for times selecting from 10 we want one divided by a few 504 And we say, Oh, so it's plus we can have all the committee composed off five women. So that would be selecting five from 10 over the some more space. And these in steps Ah, step by step. But I just prepared to put it all in the calculator. They're my good seven saving 52 divided by five little four and this is Justice. Sim is half. Was it for my fashion. Then we go toe f f stays exactly three overs. So while the probability off exactly three h now, once you have got three Opal's, it means that the rest can be what duties it does not matter. So this would mean that we are going to have improbability off three h Visa vee and just to others. So three inch agains us through others. Two can be anything but three have to be open. So what's the probability off? Okay, what is the ah, number off me off combination off selecting three Opens from from the Five Opus we have It's five C three times just selecting. They remained up. They remained after 15 people and we want to select to divided by 15 or get 15 5 cell phone. I didn't have that off or so this would be equal to just calling it down. Sin 10 a more blood by one more five decided by 50 you know, five little full and then this will give you a final lines off. Settle plants, Cyril. 6772 side. Natalie Ah, What is the probability about being led off getting more than two halmos at least two Paul Mus. So at least it to almost means the compliments. One man of a compliment off getting to Ramos, which is a cross to, um, the crumbling lend off. Not getting to Ramos means that we we, um, serving one time or no problem, it'll so one former means we Ah, where King Ah, many people. Most we have We've got to nine. So it will be nine c one times. So if we would one poor more than we have the other one's 11 pictures for and all this is itwas to 15 54 class um, the other cases off you have no problem it or it means we just select from the other, which is, you know, we're selecting for me 11 and from there we need five people Nanako almost off 15 54 So this off the equal to one minus. If you end watches inside the brackets, it's 792 also 15 504 which is equal to 14 712 divided by 52 five little full, which is equal to little point mine for eight line

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