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.

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Description: 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 w

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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