1.) I want to estimate the proportion of adults who like sci-fi movies. How many people should I poll to be 96% confident that I am within 1% of the population proportion? 2.) High school seniors' SAT scores are normally distributed with µ = 1050 and o = 100. If a student is selected at random, find the probability that her SAT score is: a.) above 1200 b.) below 890 %3D c.) between 1000 and 1100 d.) What SAT score separates the smartest 4% of students? e.) If 18 seniors are selected, find the probability that their mean SAT score is above 1150 3.) A survey of 200 college students revealed that 160 of them eat dessert daily. Construct a 95% confidence interval for the population proportion of college students who eat dessert daily. 4.) I want to estimate the mean number of minutes that a 7-year-old watches TV daily. How many kids should I poll in order to be 99% confident that I am within 15 minutes of the actual time? Assume o = 45 min. 5.) The following are wait times (in minutes) at a certain DMV: 25 76 56 45 35 88 75 66 45 77 65 66 43 65 a.) Construct a 95% confidence interval for the mean wait time at this DMV. b.) Construct a 90% confidence interval for the standard deviation of wait times

1.) I want to estimate the proportion of adults who like sci-fi movies. How many people should I poll to be 96% confident that I am within 1% of the population proportion? 2.) High school seniors' SAT scores are normally distributed with µ = 1050 and o = 100. If a student is selected at random, find the probability that her SAT score is: a.) above 1200 b.) below 890 %3D c.) between 1000 and 1100 d.) What SAT score separates the smartest 4% of students? e.) If 18 seniors are selected, find the probability that their mean SAT score is above 1150 3.) A survey of 200 college students revealed that 160 of them eat dessert daily. Construct a 95% confidence interval for the population proportion of college students who eat dessert daily. 4.) I want to estimate the mean number of minutes that a 7-year-old watches TV daily. How many kids should I poll in order to be 99% confident that I am within 15 minutes of the actual time? Assume o = 45 min. 5.) The following are wait times (in minutes) at a certain DMV: 25 76 56 45 35 88 75 66 45 77 65 66 43 65 a.) Construct a 95% confidence interval for the mean wait time at this DMV. b.) Construct a 90% confidence interval for the standard deviation of wait times

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Description: 1.) I want to estimate the proportion of adults who like sci-fi movies. How many peopleshould I poll to be 96% confident that I am within 1% of the population proportion?2.) High school seniors' SAT scores are normally distributed with µ = 1050 and

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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