Question

A polling group wants to estimate the turn out for Macomb County during the 2020 presidential election. They sample 1000 Macomb County residents and 613 report that they will be voting in the 2020 presidential election. Answer the following questions:

(a) If you were asked to construct a confidence interval what are the two pieces of inform you need?

(b) What is the point estimate for the above scenario?

(c) Calculate the Margin of Error at a 99% confidence level.

(d) Construct the Confidence Interval for the true proportion of Macomb County residents that will vote in the 2020 election.

(e) Give interpretation of the Confidence Interval

Answer #1

In a survey of 1002 people, 701 said that they voted in a recent
presidential election (based on data from ICR Research Group).
Voting records show that 61% of eligible voters actually did
vote.
(a) Find a 99% confidence interval estimate of the proportion of
people who say that they voted.
(b) Are the survey results consistent with the actual voter
turnout of 61%? Why or why not?

We wish to estimate what percent of adult residents in a certain
county are parents. Out of 400 adult residents sampled, 128 had
kids. Based on this, construct a 99% confidence interval for the
proportion p of adult residents who are parents in this
county.
Express your answer in tri-inequality form. Give your answers as
decimals, to three places.
____ < p < ____ Express the same answer using the point
estimate and margin of error. Give your answers as...

We wish to estimate what percent of adult residents in a certain
county are parents. Out of 500 adult residents sampled, 235 had
kids. Based on this, construct a 99% confidence interval for the
proportion p of adult residents who are parents in this county.
Express your answer in tri-inequality form. Give your answers as
decimals, to three places. < p < Express the same answer
using the point estimate and margin of error. Give your answers as
decimals, to...

We wish to estimate what percent of adult residents in a certain
county are parents. Out of 600 adult residents sampled, 270 had
kids. Based on this, construct a 90% confidence interval for the
proportion p p of adult residents who are parents in this
county.

2020 Election ~ Bernie Sanders is a popular
presidential candidate among university students for the 2020
presidential election. Leading into Michigan’s presidential primary
election in 2020, a journalist, Lauren took a random sample of
11,761 university students and found that 8,626 of them support
Bernie Sanders.
Using this data, Lauren wants to estimate the actual proportion
of university students who support Bernie Sanders.
To calculate the required sample size, what value of p* should
we use in the formula below...

We wish to estimate what percent of adult residents in a certain
county are parents. Out of 400 adult residents sampled, 156 had
kids. Based on this, construct a 95% confidence interval for the
proportion ππ of adult residents who are parents in this
county.
Give your answers as decimals, to three places

We
wish to estimate what percent of adult residents in a certain
county are parents. Out of 500 adult residents sampled, 400 had
kids. Based on this , construct a 90% confidence interval for the
proportion of sdult residents who are parents in this
country.

We wish to estimate what percent of adult residents in a certain
county are parents. Out of 500 adult residents sampled, 360 had
kids. Based on this, construct a 90% confidence interval for the
proportion p of adult residents who are parents in this county.
Give your answers as decimals, to 4 places. Answer = ± (Note this
is NOT in interval form, so check your answer carefull

We wish to estimate what percent of adult residents in a certain
county are parents. Out of 100 adult residents sampled, 40 had
kids. Based on this, construct a 95% confidence interval for the
proportion p of adult residents who are parents in this
county.
Express your answer in tri-inequality form. Give your answers as
decimals, to three places.
< p < Express the same answer using the point
estimate and margin of error. Give your answers as decimals, to
three...

A survey of 100 randomly selected Michigan residents finds that
the they spend a mean of $21 per month on going to the movies. An
independent study of a 100 randomly selected California residents
find that they spend a mean of $46 per month on going to the
movies. Assume that the population standard deviation for the
Michigan residents is $5 per month and that the population standard
deviation for the California residents is $23 per month. Answer the
following...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 22 minutes ago

asked 33 minutes ago

asked 43 minutes ago

asked 43 minutes ago

asked 55 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago