A random sample of 364 married couples found that 288 had two or more personality preferences in common. In another random sample of 574 married couples, it was found that only 38 had nopreferences in common. Let p, be the population proportion of all married couples who have two or more personality preferences in common. Let p, be the population proportion of all marriedcouples who have no personality preferences in common.n USE SALT(a) Find a 90% confidence interval for p, - P2. (Use 3 decimal places.)lower limitupper limit

Givensample size(n1)=364x1=288p1^=x1n1=288364=0.791n2=574x2=38p2^=x2n2=38574=0.066Confidence…

Answered: A random sample of 364 married couples…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A random sample of 388 married couples found that 296 had two or more personality preferences in common. In another random sample of 564 married couples, it was found that only 24 had no preferences in common. Let p, be the population proportion of all married couples who have two or more personality preferences in common. Let p, be the population proportion of all married couples who have no personality preferences in common. n USE SALT (a) Find a 90% confidence interval for p, - pɔ. (Use 3 decimal places.) lower limit upper limit (b) Explain the meaning of the confidence interval in part (a) in the context of this problem. Does the confidence interval contain all positive, all negative, or both positive and negative numbers? What does this tell you (at the 90% confidence level) about the proportion of married couples with two or more personality preferences in common compared with the proportion of married couples sharing no personality preferences in common? O Because the interval…
A store randomly samples 603 shoppers over the course of a year and finds that 142 of them made their visit because of a coupon they'd received in the mail. A 95% confidence interval for the fraction of all shoppers during the year whose visit was because of a coupon they'd received in the mail is (0.2016, 0.2694) The store management can be 95% confident that any sample of shoppers would have a proportion of visitors whose visit is because of receiving a coupon be within this confidence interval The store management can be 95% confident that the population proportion of customers visiting the store because they received a coupon is within our confidence interval 95% of customers visiting the store because of receiving a coupon is within our confidence interval
If the number of smokers in a sample of 160 students selected from university A is 56 and the number of smokers in a sample of 60 students selected from university B is 16. Then the 98% confidence interval for the difference between proportions of smokers in the two universities (PB-PA) is closest to a. (-0.0942,-0.0724) b. None of these c.(-0.2240,0.0572) d. (-0.2420,0.0758) e. (-0.0929,-0.0737)
A random sample of 390 married couples found that 292 had two or more personality preferences in common. In another random sample of 582 married couples, it was found that only 36 had no preferences in common. Let p1 be the population proportion of all married couples who have two or more personality preferences in common. Let p2 be the population proportion of all married couples who have no personality preferences in common. (a) Find a 95% confidence interval for p1 - P2. (Use 3 decimal places.) lower limit upper limit (b) Explain the meaning of the confidence interval in part (a) in the context of this problem. Does the confidence interval contain all positive, all negative, or both positive and negative numbers? What does this tell you (at the 95% confidence level) about the proportion of married couples with two or more personality preferences in common compared with the proportion of married couples sharing no personality preferences in common? O Because the interval contains…
A study was done to determine whether there is a relationship between snoring and the risk of heart disease. Among 1,105 snorers in the study, 87 had heart disease, while only 26 of 1,379 non-snorers had heart disease. (a) Determine a 95% confidence interval that estimates p1 − p2 = difference in proportions of snorers and non-snorers who have heart disease. (Let p1 be the proportion of snorers and p2 be the proportion of non-snorers. Round your answers to three decimal places.) to
A random sample of 372 married couples found that 292 had two or more personality preferences in common. In another random sample of 562 married couples, it was found that only 40 had no preferences in common. Let p1 be the population proportion of all married couples who have two or more personality preferences in common. Let p2 be the population proportion of all married couples who have no personality preferences in common. (a) Find a 95% confidence interval for p1 – p2. (Use 3 decimal places.) lower limit =__ upper limit =__ (b) Explain the meaning of the confidence interval in part (a) in the context of this problem. Does the confidence interval contain all positive, all negative, or both positive and negative numbers? What does this tell you (at the 95% confidence level) about the proportion of married couples with two or more personality preferences in common compared with the proportion of married couples sharing no personality preferences in common? A-Because…
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A survey was conducted of visitors to the Jakarta Fair. For this reason, two groups of samples were taken. The first sample was 500 visitors for women and when they were asked 325 people said they were satisfied with the exhibition at the Jakarta Fair, while the second sample consisted of 700 visitors for gentlemen and 300 of them said they were not satisfied with the exhibition at the Jakarta Fair. the Jakarta Fair. Make a 95% confidence interval to estimate how much the difference between the two populations of visitors who are satisfied with the exhibition at the Jakarta Fair?
A random sample of 378 married couples found that 300 had two or more personality preferences in common. In another random sample of 580 married couples, it was found that only 22 had no preferences in common. Let p1 be the population proportion of all married couples who have two or more personality preferences in common. Let p2 be the population proportion of all married couples who have no personality preferences in common. (a) Find a 90% confidence interval for p1 – p2. (Use 3 decimal places.) lower limit upper limit (b) Explain the meaning of the confidence interval in part (a) in the context of this problem. Does the confidence interval contain all positive, all negative, or both positive and negative numbers? What does this tell you (at the 90% confidence level) about the proportion of married couples with two or more personality preferences in common compared with the proportion of married couples sharing no personality preferences in common?
A study was done to determine whether there is a relationship between snoring and the risk of heart disease. Among 1,105 snorers in the study, 89 had heart disease, while only 29 of 1,379 nonsnorers had heart disease. Determine a 95% confidence interval that estimates p1 − p2 = difference in proportions of snorers and nonsnorers who have heart disease. (Let p1 be the proportion of snorers and p2 be the proportion of nonsnorers. Round your answers to three decimal places.) ____to ____
A random sample of 388 married couples found that 284 had two or more personality preferences in common. In another random sample of 560 married couples, it was found that only 24 had no preferences in common. Let p₁ be the population proportion of all married couples who have two or more personality preferences in common. Let p₂ be the population proportion of all married couples who have no personality preferences in common. USE SALT (a) Find a 90% confidence interval for P₁ P₂. (Use 3 decimal places.) lower limit upper limit (b) Explain the meaning of the confidence interval in part (a) in the context of this problem. Does the confidence interval contain all positive, all negative, or both positive and negative numbers? What does this tell you (at the 90% confidence level) about the proportion of married couples with two or more personality preferences in common compared with the proportion of married couples sharing no personality preferences in common? O We can not make any…

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