Homework Help is Here – Start Your Trial Now!
Math
Statistics
2. Many people have heard of the "Freshmen 20," referring to the belief that many college freshmen will gain 20 lbs. their freshmen year in school. Administrators were interested in knowing if this is really true. A random sample of thirty freshmen (at the end of their freshmen year) was obtained. The average amount of weight gained by the freshmen is listed below. 21.8 20.6 21 20.2 19.2 17.8 22.8 20.2 22 19.4 18.6 18.2 20 19 21 23 19.6 19 24.6 19.6 17.8 20.6 20.8 17.2 22.4 19.2 23.4 18.2 20.6 21.4 a. Find a 97.5% confidence interval for the average amount of weight gained for freshmen. b. Interpret the CI. c. Using your CI found in part a, can you conclude with 97.5% confidence that college freshmen gained more than 20 Ibs.?

2. Many people have heard of the "Freshmen 20," referring to the belief that many college freshmen will gain 20 lbs. their freshmen year in school. Administrators were interested in knowing if this is really true. A random sample of thirty freshmen (at the end of their freshmen year) was obtained. The average amount of weight gained by the freshmen is listed below. 21.8 20.6 21 20.2 19.2 17.8 22.8 20.2 22 19.4 18.6 18.2 20 19 21 23 19.6 19 24.6 19.6 17.8 20.6 20.8 17.2 22.4 19.2 23.4 18.2 20.6 21.4 a. Find a 97.5% confidence interval for the average amount of weight gained for freshmen. b. Interpret the CI. c. Using your CI found in part a, can you conclude with 97.5% confidence that college freshmen gained more than 20 Ibs.?

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
Section10.4: Distributions Of Data
Problem 19PFA
See similar textbooks
icon
Related questions
Question
2. Many people have heard of the "Freshmen 20," referring to the belief that many college freshmen will gain 20 lbs. their freshmen year in school. Administrators were interested in knowing if this is really true. A random sample of thirty freshmen (at the end of their freshmen year) was obtained. The average amount of weight gained by the freshmen is listed below. 21.8 20.6 21 20.2 19.2 17.8 22.8 20.2 22 19.4 18.6 18.2 20 19 21 23 19.6 19 24.6 19.6 17.8 20.6 20.8 17.2 22.4 19.2 23.4 18.2 20.6 21.4 a. Find a 97.5% confidence interval for the average amount of weight gained for freshmen. b. Interpret the CI. c. Using your CI found in part a, can you conclude with 97.5% confidence that college freshmen gained more than 20 Ibs.?
Transcribed Image Text:2. Many people have heard of the "Freshmen 20," referring to the belief that many college freshmen will gain 20 lbs. their freshmen year in school. Administrators were interested in knowing if this is really true. A random sample of thirty freshmen (at the end of their freshmen year) was obtained. The average amount of weight gained by the freshmen is listed below. 21.8 20.6 21 20.2 19.2 17.8 22.8 20.2 22 19.4 18.6 18.2 20 19 21 23 19.6 19 24.6 19.6 17.8 20.6 20.8 17.2 22.4 19.2 23.4 18.2 20.6 21.4 a. Find a 97.5% confidence interval for the average amount of weight gained for freshmen. b. Interpret the CI. c. Using your CI found in part a, can you conclude with 97.5% confidence that college freshmen gained more than 20 Ibs.?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 3 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Holt Mcdougal Larson Pre-algebra: Student Edition…
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
SEE MORE TEXTBOOKS