A survey of 1000 students concluded that 274students chose a professional baseball team, A, ashis or her favorite team. In 1991, the same surveywas conducted involving 760 students. It concludedthat 240 of them also chose team A as their favorite.Compute a 95% confidence interval for thedifference between the proportion of studentsfavoring team A between the two surveys. Is there asignificant difference?(upload the picture of solution and roundoffyour final answer into 5 decimal places)

The question is about a confidence int. for a difference between two popl. prop. Given : No. of…

Answered: A survey of 1000 students concluded…

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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The figure to the right shows the results of a survey in which 1018 adults from Country A, 1025 adults from Country B, 1005 adults from Country C, 999 adults from Country D, and 999 adults from Country E were asked whether national identity is strongly tied to birthplace. Construct a 95% confidence interval for the population proportion of adults who say national identity is strongly tied to birthplace for each country listed. The 95% confidence interval for the proportion of adults from Country A who say national identity is strongly tied to birthplace is (____),(____) The 95% confidence interval for the proportion of adults from Country B who say national identity is strongly tied to birthplace is (____),(____) The 95% confidence interval for the proportion of adults from Country C who say national identity is strongly tied to birthplace is (____),(____) The 95% confidence interval for the proportion of adults from Country D who say national identity is strongly tied to…
Construct a 95% confidence interval for p1 - p2 for a survey that finds 30% of 240 males and 41% of 200 females are opposed to the death penalty. Group of answer choices a.(-0.200, -0.021) b.(-1.532, 1.342) c.(-1.324, 1.512) d.(-0.561, 0.651)
Suppose that in a recent poll, 550 of the 915 randomly selected U.S. adults agreed with the statement “social media sites like Facebook and Twitter do more to divide the country” (as opposed to unite the country, or neither). a. Use this information to construct a 90% confidence interval.
In a sample of 624 applicants to the Durmstrang Institute of Sorcery, 133 were accepted. Construct a 90% confidence interval for the true proportion of applicants to Durmstrang that are accepted. Does it appear that Durmstrang accepts 20% of their applicants?
A survey of 2450 golfers showed that 281 of them are left-handed. Construct a 90% confidence interval for the proportion of golfers that are left-handed. Question 10 options: (0.104, 0.125) (0.369, 0.451) (0.100, 0.130) (0.203, 0.293)
In a study of 150 burglary incidents witnessed by the youngsters, 43% lead those young people develop PTSD. Find the 99% confidence interval of the true proportion of burglary incidents that lead the youngsters to develop PTSD.
A study of 30 college students showed that 25 are binge watching series. Find a 95% confidence interval for the proportion of students that are binge watching series.
Ten engineering schools in the US were surveyed. the sample contains 250 electrical engineers, 80 being women; 175 chemical engineers, 40 being women. Compute a 90% confidence interval for the difference between the proportions of women in these two fields of engineering. Select one: O a. (0.02, 0.16) Ob. (0.01, 0.17] O. (0.04, 0.14) O d. [0.03, 0.15]
The Virginia Department of Environmental Quality (VDEQ) uses probabilistic monitoring to regulate the water quality of streams in the Commonwealth of Virginia. Of the 85 Eastern Virginia Sites (group 1), 17 do not meet minimum requirements. Of the 80 units sampled in Western Virginia Sites (group 2), 24 do not meet minimum requirements. Assume the data can be treated as independent simple random samples. The hypotheses to test that the proportions of streams that fail to meet minimum requirements in the two areas are equal or not is O Ho: P1 P2 vs. Ha: P1 P2 O Ho: P1 P2 vs. Ha: P₁ P2 P2 vs. Ha: P₁ = P2 O Ho: P1 O Ho: P1 P2 Vs. Ha: P₁ P2
Of 130 adults selected randomly from one town, 25 of them smoke. Construct a 99% confidence interval for the true percentage of all adults in the town that smoke.
Of 375 randomly selected students, 30 said that they planned to work in a rural community. Find 95% confidence interval for the true proportion of all medical students who plan to work in a rural community. b. Can you say that more than 10% of the medical students plan to work for a rural area?

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