How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in temperatures from 20F to 45. A random sample of prices () for sleeping bags in this temperature range is given below. Assume that the population of x values has an approximately normal distribution. 115 60 35 100 120 60 30 23 100 110 105 95 105 60 110 120 95 60 70 A USE SALT (a) Use a caloulator with mean and sample standard deviation keys to find the sample mean price iand sample standard deviutions. (Round your answers to four decimal places.) ... (b) Using the given data as representative of the population of prices of al summer sleeping bags, find a 9o confidence interval for the mean priceof al summer seeping bags. (Round your answers to two decimal places.) lower limit upper limit

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
How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in temperatures from 20°F to 45°F. A random sample of prices ($) for
sleeping bags in this temperature range is given below. Assume that the population of x values has an approximately normal distribution.
115 60 35 100 120 60 30 23 100 110
105 95 105 60 110 120 95 90 60 70
A USE SALT
(a) Use a calculator with mean and sample standard deviation keys to find the sample mean price x and sample standard deviation s. (Round your answers to four decimal
places.)
(b) Using the given data as representative of the population of prices of all summer sleeping bags, find a 90% confidence interval for the mean price w of all summer sieeping
bags. (Round your answers to two decimal places.)
lower limit
upper limit
Transcribed Image Text:How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in temperatures from 20°F to 45°F. A random sample of prices ($) for sleeping bags in this temperature range is given below. Assume that the population of x values has an approximately normal distribution. 115 60 35 100 120 60 30 23 100 110 105 95 105 60 110 120 95 90 60 70 A USE SALT (a) Use a calculator with mean and sample standard deviation keys to find the sample mean price x and sample standard deviation s. (Round your answers to four decimal places.) (b) Using the given data as representative of the population of prices of all summer sleeping bags, find a 90% confidence interval for the mean price w of all summer sieeping bags. (Round your answers to two decimal places.) lower limit upper limit
Expert Solution
Step 1

Given,sample size(n)=20degrees of freedom(df)=n-1=20-1=19α=1-0.90=0.10α2=0.05t0.05(19)=1.729

trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

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
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