Compute thefollowing confidence intervals. You may use them using formulas OR using your calculator functions (strongly recommended). You must show ALL work, specifically writing which function you use in the calculator. If necessary, round to the nearest hundredth.1.In a recent year, the standard deviation of ACT scores for all students was 4.7. You take a random survey of 20 students and determine the ACT score of each. The scores are listed below:26 22 23 12 19 25 23 21 25 10 17 26 23 24 20 14 21 23 20 and 22... Assume the test scores are normally distributed. Calculated the 90% confidence interval for the population average ACT score.State your interpretation.2.You ask a random sample of 200 people in the US whether they are in favor of outlawing cigarettes. Of the 200 people, 54 are in favor of outlawing cigarettes. Find a 95% confidence interval for the proportion of people in the US who are in favor of outlawing cigarettes. State your interpretation 2. You ask a random sample of 200 people in the US whether they are in favor of outlawing cigarettes. Of the 200 people, 54 are in favor of outlawing cigarettes. Find a 95% confidence interval for the proportion of people in the US who are in favor of outlawing cigarettes. State your interpretation 3.A random sample of 10 regions in New England gave the following violent crime rates (per million population):3.53.74.03.93.34.11.84.82.93.1Find the 85% confidence interval for the average violent crime rate in New England states. State your interpretation and conclusion.

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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Compute thefollowing confidence intervals. You may use them using formulas OR using your calculator functions (strongly recommended). You must show ALL work, specifically writing which function you use in the calculator. If necessary, round to the nearest hundredth.1.In a recent year, the standard deviation of ACT scores for all students was 4.7. You take a random survey of 20 students and determine the ACT score of each. The scores are listed below:26 22 23 12 19 25 23 21 25 10 17 26 23 24 20 14 21 23 20 and 22...

Assume the test scores are normally distributed. Calculated the 90% confidence interval for the population average ACT score.State your interpretation.2.You ask a random sample of 200 people in the US whether they are in favor of outlawing cigarettes. Of the 200 people, 54 are in favor of outlawing cigarettes. Find a 95% confidence interval for the proportion of people in the US who are in favor of outlawing cigarettes. State your interpretation

2. You ask a random sample of 200 people in the US whether they are in favor of outlawing cigarettes.
Of the 200 people, 54 are in favor of outlawing cigarettes. Find a 95% confidence interval for the
proportion of people in the US who are in favor of outlawing cigarettes. State your interpretation

3.A random sample of 10 regions in New England gave the following violent crime rates (per million population):3.53.74.03.93.34.11.84.82.93.1Find the 85% confidence interval for the average violent crime rate in New England states. State your interpretation and conclusion.

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