A researcher is interested in testing the claim that the proportion of children(ages 8-12) who like cats more than dogs is greater than the proportion ofteenagers (13-19) who like cats more than dogs. A random sample of 53children and a random sample of 112 teenagers are selected, and eachparticipant is asked if they like cats more than dogs.Difference Children - Teenagers=A 95% confidence interval is created to estimate the difference in the trueproportions of children and teenagers who like cats more than dogs. Theinterval is (0.07, 0.12). Based on this confidence interval, what can you inferabout the comparison of the two population proportions?The proportion of children who like cats more than dogs is less than theproportion of teenagers who like cats more than dogs.The proportion of children who like cats more than dogs is greater than theproportion of teenagers who like cats more than dogs.The proportion of children who like cats more than dogs is the same as theproportion of teenagers who like cats more than dogs.There is not enough information to make any inference regarding the difference ofthe two proportions.

given data sample 1 :children n1 = 53sample 2 : teenager n2 = 112ci for difference in…

Answered: A researcher is interested in testing…

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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An insurance company selected samples of clients under 18 years of age and over 18 and recorded the number of accidents they had in the previous year. We are interested in determining if the accident proportions differ between the two age groups. The results are shown below. a =0.05 Under age of 18 Over age of 18 n₂ =500 n₁ = 480 Number of accidents = 160 Number of accidents = 140 The test statistic is A 90% confidence interval for the proportion between two age groups is approximately Given a 5% level of significance, what decision should be reached about the null hypothesis
X Y 1 2.5 4.4 1 2 13.6 4 20.7 4 25.6 36.2 5 Using the formulas for linear regression, find the constants for the regression model given by y aoa1. Then use the linear model to determine the expected value of Y when x 3
A Gallup poll of 1487 adults showed that 43% of the respondents have Facebook pages. Construct a 95% confidence interval for the proportion of adults who have a Facebook page.
Sexual assault in college: In a Washington Post/Kaiser Family Foundation Poll conducted from January through March 2015, 20% of women (ages 17‑26) who attended college during the past 4 years say they were sexually assaulted. The poll surveyed 514 randomly selected females. What is the 90% confidence interval for the proportion of women (ages 17‑26) who attended college during the past 4 years and say they were sexually assaulted? (0.182, 0.218) (0.165, 0.235) (0.155, 0.245) (0.171, 0.229)
in a town in nj we take a random sample of 100 residents. It turns out that 25% of the adult residents have degrees higher than high school diploma. Find a 90% confidence interval.
A survey of 360 college seniors found that 305 wish they had spent more time studying. Find a 94% confidence interval for the true proportion p of those who wish they had spent more time studying.
A research company is interested in determining the true proportion of Americans that work remotely. In a random sample of 200 individuals, 4.5% of them work remotely. Find a 90% confidence interval for the true proportion of Americans that work remotely.
[Statistics] What is the lower bound of the confidence interval?
Several years ago, 44% of parents who had children in grades K-12 were satisfied with the quality of education the students receive. A recent poll asked 1,075 parents who have children in grades K-12 if they were satisfied with the quality of education the students receive. Of the 1,075 surveyed, 479 indicated that they were satisfied. Construct a 95% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed. What are the null and alternative hypotheses? Ho: p = 0.44 versus H,: p 0.44 (Round to two decimal places as needed.) Use technology to find the 95% confidence interval. The lower is The upper bound is (Round to two decimal places as needed.)
10. Several years ago, 51% of parents who had children in grades K-12 were satisfied with the quality of education the students receive. A recent poll asked 1,075 parents who have children in grades K-12 if they were satisfied with the quality of education the students receive. Of the 1,075 surveyed, 472 indicated that they were satisfied. Construct a 99% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed. What are the null and alternative hypotheses? Ho: p (1) versus H1: p (2) (Round to two decimal places as needed.) Use technology to find the 99% confidence interval. The lower bound is The upper bound is (Round to two decimal places as needed.) What is the correct conclusion? O A. Since the interval contains the proportion stated in the null hypothesis, there is insufficient evidence that parents' att O B. Since the interval contains the proportion stated in the null hypothesis, there is sufficient…

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