An insurance company collects data on seat-belt use among drivers in a country. Of 1100 drivers 30-39 years old, 25% said that they buckle up, whereas301 of 1000 drivers 55-64 years old said that they did. Find a 90% confidence interval for the difference between the proportions of seat-belt users fordrivers in the age groups 30-39 years and 55-64 years.Construct a 90% confidence interval.The 90% confidence interval for p₁ - P2 is from(Round to three decimal places as needed.)to....

Answer:- Given, Sample size (30-39), n1 = 1100 Sample proportion (30-39), p1 = 0.25 Sample size (55…

Answered: An insurance company collects data on…

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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Several years ago, 46% of parents who had children in grades K-12 were satisfied with the quality of education the students receive. A recent poll asked 1,055 parents who have children in grades K-12 if they were satisfied with the quality of education the students receive. Of the 1,055 surveyed, 488 indicated that they were satisfied. Construct a 90% 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 (Type integers or decimals rounded to two decimal places as needed.) versus H,:p Use technology to find the 90% confidence interval. We are 90% confident the proportion of parents who had children in grades K-12 that were satisfied with the quality of education the students receive is between and (Type integers or decimals rounded to two decimal places as needed.) What is the correct conclusion? O A. Since the interval does not contain the proportion stated…
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IS An insurance company collects data on seat-belt use among drivers in a country. Of 1100 drivers 20-29 years old, 24% said that they buckle up, whereas 341 of 1200 drivers 45-64 years old said that they did. Find a 95% confidence interval for the difference between the proportions of seat-belt users for drivers in the age groups 20-29 years and 45-64 years. Construct a 95% confidence interval. The 95% confidence interval for p, -p, is from to . SC (Round to three decimal places as needed.)
Identify the t score for a 99% confidence interval if the sample size is 35 t=

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