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legally purchase alcohol in the State of Oregon (students who are 21 or over). If we want the margin of error to be within 5 percentage points, how many total students must we sample?

legally purchase alcohol in the State of Oregon (students who are 21 or over). If we want the margin of error to be within 5 percentage points, how many total students must we sample?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 14PPS
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3) Find a 90% confidence interval for the proportion of intro-stat students who can legally purchase alcohol in the State of Oregon (students who are 21 or over). If we want the margin of error to be within 5 percentage points, how many total students must we sample? 4) If we assume that the data is normal and treat the mean and standard deviation of the sample as if they were the population values, find the probability that a random intro-stat student is able to legally consume recreational drugs, or rather, calculate P(age>20.5). Does this value fall in the confidence interval from problem 3?
Transcribed Image Text:3) Find a 90% confidence interval for the proportion of intro-stat students who can legally purchase alcohol in the State of Oregon (students who are 21 or over). If we want the margin of error to be within 5 percentage points, how many total students must we sample? 4) If we assume that the data is normal and treat the mean and standard deviation of the sample as if they were the population values, find the probability that a random intro-stat student is able to legally consume recreational drugs, or rather, calculate P(age>20.5). Does this value fall in the confidence interval from problem 3?
For this homework, we will be revisiting the age data used in homework #2: 18 18 18 18 19 19 19 19 19 19 19 19 19 19 19 19 19 20 20 20 20 20 20 20 21 21 21 21 21 22 22 22 22 23 23 24 25 30 33 35 222 21 21
Transcribed Image Text:For this homework, we will be revisiting the age data used in homework #2: 18 18 18 18 19 19 19 19 19 19 19 19 19 19 19 19 19 20 20 20 20 20 20 20 21 21 21 21 21 22 22 22 22 23 23 24 25 30 33 35 222 21 21
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