2. The national average for the percentage of high school graduates taking the SAT is 49%, but the state averages vary from a low of 4% to a high of 92%. A random sample of 300 graduating high school seniors was polled across a particular tristate area, and it was found that 195 had taken the SAT. Estimate the true proportion of high school graduates in this region who take the SAT with 95% confidence
2. The national average for the percentage of high school graduates taking the SAT is 49%, but the state averages vary from a low of 4% to a high of 92%. A random sample of 300 graduating high school seniors was polled across a particular tristate area, and it was found that 195 had taken the SAT. Estimate the true proportion of high school graduates in this region who take the SAT with 95% confidence
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
2 and 3 only. Dont use excel pls
![ESTIMATING PROPORTION
Answer the following:
1. A su
and that out of 200 workers, 168 said they
were interrupted three
ti
more an hour by phone
messages, faxes, etc d the 90%onfidence interval
on proportion of workers who are
interrupted three or more times an hour.
of the
2. The national average for the percentage of high
school graduates taking the SAT is 49%, but the state
averages vary from a low of 4% to a high of 92%. A
random sample of 300 graduating high school seniors
was polled across a particular tristate area, and it was
found that 195 had taken the SAT. Estimate the true
proportion of high school graduates in this region who
take the SAT with 95% confidence
3. In a Gallup Poll of 1005 individuals, 452 thought they
were worse off financially than a year ago. Find the 95%
confidence interval for the true proportion of
individuals who feel they are worse off financially](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F97d039cd-10e6-4d5b-9a8b-4e01a940a32c%2Fb24b0b88-38cc-491f-8a19-a72d0a650b0d%2Fnlz188k_processed.jpeg&w=3840&q=75)
Transcribed Image Text:ESTIMATING PROPORTION
Answer the following:
1. A su
and that out of 200 workers, 168 said they
were interrupted three
ti
more an hour by phone
messages, faxes, etc d the 90%onfidence interval
on proportion of workers who are
interrupted three or more times an hour.
of the
2. The national average for the percentage of high
school graduates taking the SAT is 49%, but the state
averages vary from a low of 4% to a high of 92%. A
random sample of 300 graduating high school seniors
was polled across a particular tristate area, and it was
found that 195 had taken the SAT. Estimate the true
proportion of high school graduates in this region who
take the SAT with 95% confidence
3. In a Gallup Poll of 1005 individuals, 452 thought they
were worse off financially than a year ago. Find the 95%
confidence interval for the true proportion of
individuals who feel they are worse off financially
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