A survey administered to a random sample of 625 U.S. college students found that 125 out of the 625 students surveyed were a member of a sorority or a fraternity. Use the appropriate formula from the provided formula sheet. Compute a 99% confidence interval for the proportion of U.S. college students who are a member of a sorority or a fraternity. In the blank below, enter the upper bound of the 99% confidence interval for p. For example, if your confidence interval is (0.115, 0.276), the upper bound would be 0.276. Provide your answer as a decimal rounded to three decimal places.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
A survey administered to a random sample of 625 U.S. college students found that 125 out of the
625 students surveyed were a member of a sorority or a fraternity.
Use the appropriate formula from the provided formula sheet.
Compute a 99% confidence interval for the proportion of U.S. college students who are a member of
a sorority or a fraternity. In the blank below, enter the upper bound of the 99% confidence interval for p.
For example, if your confidence interval is (0.115, 0.276), the upper bound would be 0.276. Provide your
answer as a decimal rounded to three decimal places.
Transcribed Image Text:A survey administered to a random sample of 625 U.S. college students found that 125 out of the 625 students surveyed were a member of a sorority or a fraternity. Use the appropriate formula from the provided formula sheet. Compute a 99% confidence interval for the proportion of U.S. college students who are a member of a sorority or a fraternity. In the blank below, enter the upper bound of the 99% confidence interval for p. For example, if your confidence interval is (0.115, 0.276), the upper bound would be 0.276. Provide your answer as a decimal rounded to three decimal places.
A large supermarket chain wanted to estimate the population mean number of items purchased by
customers per visit. A random sample of 225 customers was chosen and it was found that the
sample mean number of items purchased was 18.46. The sample standard deviation was 3.97 items.
Compute a 90% confidence interval for u, the population mean number of items purchased by
customers per visit. Note that because the sample size is sufficiently large, you can use a z*
confidence multiplier instead of a t* confidence multiplier. Use the appropriate formula from the
provided formula sheet.
In the blank below, enter the lower bound of the 90% confidence interval for µ. For example, if your
confidence interval is (22.115, 25.876), the lower bound would be 22.115. Round your answer to three
decimal places.
Transcribed Image Text:A large supermarket chain wanted to estimate the population mean number of items purchased by customers per visit. A random sample of 225 customers was chosen and it was found that the sample mean number of items purchased was 18.46. The sample standard deviation was 3.97 items. Compute a 90% confidence interval for u, the population mean number of items purchased by customers per visit. Note that because the sample size is sufficiently large, you can use a z* confidence multiplier instead of a t* confidence multiplier. Use the appropriate formula from the provided formula sheet. In the blank below, enter the lower bound of the 90% confidence interval for µ. For example, if your confidence interval is (22.115, 25.876), the lower bound would be 22.115. Round your answer to three decimal places.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Point Estimation, Limit Theorems, Approximations, and Bounds
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman