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Jnit 2: Chapter 7 Practice Score; 0/5 0/4 answeredQuestion-paying for Wie talk t0 57 people vrho have people ride public transport withor proportion more tham It Is...

Question

Jnit 2: Chapter 7 Practice Score; 0/5 0/4 answeredQuestion-paying for Wie talk t0 57 people vrho have people ride public transport withor proportion more tham It Is known that 206 What I5 Une probability Uhat the sample transpart in the last montma peen on public 22902 number accurate {0 decimal places.| (Enter yout ans*cSubmnilt Qucetlonhele scatchDAALN

Jnit 2: Chapter 7 Practice Score; 0/5 0/4 answered Question- paying for Wie talk t0 57 people vrho have people ride public transport withor proportion more tham It Is known that 206 What I5 Une probability Uhat the sample transpart in the last montma peen on public 22902 number accurate {0 decimal places.| (Enter yout ans*c Submnilt Qucetlon hele scatch DAAL N



Answers

For Exercises $12-21,$ find the margin of sampling error to the nearest percent.
Three hundred sixty-seven of 425 high school students said pizza was their favorite food in the school cafeteria.

So for the given case, we have to find the area between the to the discourse that are yes, 0.68. And the 2nd 1 is 1.78. That equals to 0.68 And another one is equal to 1.7 17. We have to find this area. Well, this would be that Less than 0.60. And here 1.78. This value will be for l p o. That less than 1.78 minus quality of that, less than 0.68. This boat value from the table first value is yeah, zero point 9616 minus another value is 0.7485. And you can see abstract now local news one three 1 2. So answered. A 0.2131.

The standard normal deviation given as new as zero And Sigma is one. We have to find the very school four. Uh pro gravity for that, it's called less than 2.33. So 2.33, there is police in this direction, we have to find all the area. So the reality is that lesson 2.33 from the table from that table Comes out TV 0.9901 0.990. And it comes from that table. Mhm.

Yes, it is. As about the morality of said Area independent 3.80 or so. We'll be of that support Greater than 3.80 can also be written as 1-. Were there to support less than 3.80? And from the table, this value comes out to be zero 999 93, Which is 0.00007. This can be founded equivalent to 0.000. What? And this is our answer 0.0001.

For this question, we refer back to exercise 30 and section 2.3, where we had the number, the probability mass function for the number of traffic citations for randomly selected people. And now we answer a few questions about the probabilities of numbers of people who have no citations or at least one citation. So the important thing from Exercise 30 in Section 2.3 was that the probability of getting no citations was 0.6. So we will call that a success in this binomial distribution. And now we're picking 15 randomly selected people and assessing how many of them have no citations or have at least one citation. So for a were asked, what is the probability that at least 10 have no citations? So that is the probability that number of successes is at least him, and this is equal to one minus. The probability of at most nine successes is equal to one, minus the cumulative probability nine successes given these binomial parameters, and this comes out to 0.403 and then for B were asked, what is the probability that fewer than half have at least one citation which also is the same as saying. What is the probability that at least half have no citations? So our sample sizes 15 so at least half means at least eight. So what is the probability that at least eight successes, or at least eight have no citations? Secret one minus the probability that we have, at most seven citations out of 15 and this comes out to 0.787 and then last for C were asked, What is the probability that the number of people who have at least one citation is between five and 10? Which means that the number of people who have no citations number of successes is four or less or 11 or more. So this is improbability have four or less successes, plus the probability of at least 11 successes. So this excludes between five and 10 successes. Which would mean that there's between five and 10 people who have at least one citation so we can rewrite this as follows and this comes out to zero point 227


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