A random sample of 320 college students was asked if they own thier car. Based onthis random sample, a 95% confidence interval for the proption of all collegestudents is 0.337 to 0.444.a. Calculate the point estimate used to create this confidence interval.b. Calculate the margin of error used to create this confidence interval.

Name: A random sample of 320 college students was asked if they own thier c
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: A random sample of 320 college students was asked if they own thier car. Based onthis random sample, a 95% confidence interval for the proption of all collegestudents is 0.337 to 0.444.a. Calculate the point estimate used to create this confidence i

a. The point estimate used to create this confidence interval is, Point estimate=Upper limit+Lower…

Answered: a. Calculate the point estimate used to…

Math

Statistics

a. Calculate the point estimate used to create this confidence interval. b. Calculate the margin of error used to create this confidence interval.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A box model is used to calculate a confidence interval in the following scenario: One thousand high school students in a large city are randomly selected for a survey. Among these students, the average reported GPA is 3.0, and the SD is 1.22. For each of the following quantities in the box model, select the answer if the quantity is estimated, not known. Leave the quantities that are known unselected. a. the SD of GPA of high school students in the sample b. the average GPA of high school students in the sample c. the average GPA of all high school students in the city d. the SD of the tickets in the box
A new fertilizer was applied to the soil of 239 bean plants. 11% showed increased growth. Find the margin of error and 95% confidence interval for the percentage of all bean plants which show increased growth after application of the fertilizer. Round all answers to 2 decimal places. Margin of Error (as a percentage): Confidence Interval:
Males and females were asked what they would do if they received a $100 bill in the mail that was addressed to their neighbor, but had been incorrectly delivered to them. Of the 70 males sampled, 55 said yes they would return it to their neighbor. Of the 130 females sampled, 120 said yes. We want to construct a 90% confidence interval estimate for the difference between the true proportion of males who say they would return the money to their neighbor and the true proportion of females who say they would return the money to their neighbor. Choose the best option for the result of constructing that interval. O -226 < p1 -p2 < +.003 O-226 < p1 -p2 <.-.048 O -243 < p1 -p2 < -.031
What is the correct interpretation for a 95% confidence interval of the population mean μ? The probability that the population mean is in the interval is 5%. In the long run, 95% of the intervals created will contain the population mean. There is a 5% chance that the sample mean will be in the interval. 95% of the population has a value in the confidence interval.
A research center survey of 2,484 adults found that 1,942 had bought something online. Of these online shoppers, 1,295 are weekly online shoppers. Complete parts (a) through (c) below. a. Construct a 95% confidence interval estimate of the population proportion of adults who had bought something online. Sas (Round to four decimal places as needed.) led b. Construct a 95% confidence interval estimate of the population proportion of online shoppers who are weekly online shoppers. Sas (Round to four decimal places as needed.) c. How would the director of e-commerce sales for a company use the results of (a) and (b)? O A. Since a greater proportion of adults have purchased something online than are weekly online shoppers, the director of e-commerce sales may want to focus on those adults who have purchased something online. led O B. The information cannot be compared because it is derived from two different opinions. O C. Agreater proportion of adults have purchased something online, but…
Echinacea is widely used as an herbal remedy for the common cold, but does it work? In a double-blind experiment, healthy volunteers agreed to be exposed to common-cold-causing rhinovirus type 39 and have their symptoms monitored. The volunteers were randomly assigned to take either a placebo or an echinacea supplement daily for 5 days following viral exposure. Among the 103 subjects taking a placebo, 88 developed a cold, whereas 44 of the 48 subjects taking echinacea 1 developed a cold.
With a large sample (N>30), the Excel function CONFIDENCE.T is used to calculate the confidence interval. True or False
A new fertilizer was applied to the soil of 290 bean plants., 30% showed increased growth. Find the margin of error and 95% confidence interval for the precentage of all bean plants which show increased growth after application of the fertilizer. Round to 2 decimals 1. Margin of Error (as a percentage) 2. Confidence Interval ____________% to _____________%.
help
Advertising and Sales. use the technology of your choice to obtain the requested point estimate and confidence interval for the mean total sales, and the predicted value and prediction interval for total sales for television advertising of $9.5 million, magazine advertising of $4.3 million, and radio advertising of $5.2 million.
Find the critical value for a 98% confidence interval. Then calculate the interval.
Explain the difference between a point estimate and confidence interval. Provide an example.