Homework Help is Here – Start Your Trial Now!
Math
Statistics
The Cleaning Institute conducted a survey in 2009 of 865 adults asking each adult the number of times they wash their hands per day. The mean number of times those sampled washed their hands was 8.726 with a standard deviation of 6.611. Researchers would like to include a 90% confidence interval. • How many degrees of freedom would be associated with the t-distribution? df = • With 90% confidence, we estimate the mean number of times an individual washes their hands is between • Based on the interval computed, can we conclude the typical American adult washes their hands fewer than 9 times per day, on average? and - (The appropriate t critical point is t = 1.647. Round the limits of your interval to 4 decimal places.) Yes. Most of the interval falls below 9. No. The interval extends above 9. Yes. The interval falls entirely below 9.

The Cleaning Institute conducted a survey in 2009 of 865 adults asking each adult the number of times they wash their hands per day. The mean number of times those sampled washed their hands was 8.726 with a standard deviation of 6.611. Researchers would like to include a 90% confidence interval. • How many degrees of freedom would be associated with the t-distribution? df = • With 90% confidence, we estimate the mean number of times an individual washes their hands is between • Based on the interval computed, can we conclude the typical American adult washes their hands fewer than 9 times per day, on average? and - (The appropriate t critical point is t = 1.647. Round the limits of your interval to 4 decimal places.) Yes. Most of the interval falls below 9. No. The interval extends above 9. Yes. The interval falls entirely below 9.

MATLAB: An Introduction with Applications
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
icon
Related questions
Topic Video
Question
The Cleaning Institute conducted a survey in 2009 of 865 adults asking each adult the number of times they wash their hands per day. The mean number of times those sampled washed their hands was 8.726 with a standard deviation of 6.611. Researchers would like to include a 90% confidence interval. • How many degrees of freedom would be associated with the t-distribution? df = • With 90% confidence, we estimate the mean number of times an individual washes their hands is between • Based on the interval computed, can we conclude the typical American adult washes their hands fewer than 9 times per day, on average? and . (The appropriate t critical point is t= 1.647. Round the limits of your interval to 4 decimal places.) Yes. Most of the interval falls below 9. O No. The interval extends above 9. Yes. The interval falls entirely below 9.
Transcribed Image Text:The Cleaning Institute conducted a survey in 2009 of 865 adults asking each adult the number of times they wash their hands per day. The mean number of times those sampled washed their hands was 8.726 with a standard deviation of 6.611. Researchers would like to include a 90% confidence interval. • How many degrees of freedom would be associated with the t-distribution? df = • With 90% confidence, we estimate the mean number of times an individual washes their hands is between • Based on the interval computed, can we conclude the typical American adult washes their hands fewer than 9 times per day, on average? and . (The appropriate t critical point is t= 1.647. Round the limits of your interval to 4 decimal places.) Yes. Most of the interval falls below 9. O No. The interval extends above 9. Yes. The interval falls entirely below 9.
Expert Solution
steps

Step by step

Solved in 2 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Data Collection, Sampling Methods, and Bias
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.
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
SEE MORE TEXTBOOKS