How Many Hours on a Computer? Exercise 1.24 introduces the dataset PASeniors which includes many variables on a sample of high school seniors in Pennsylvania. One of the vari- ables is ComputerHours, which gives the number of hours the student spent on a computer during the previous week. In the sample, 447 students answered the question, and the sample mean was 16.740 hours with a standard deviation of 17.688. Find and interpret a 99% confidence interval for the mean number of hours per week that high school seniors in Pennsylvania spend on the computer. Questions: 1. Find the lower bound for this confidence interval, in other words find the value of xbar-ME. 2. Find the upper bound for this confidence interval, in other words find the value of x bar +ME
How Many Hours on a Computer? Exercise 1.24 introduces the dataset PASeniors which includes many variables on a sample of high school seniors in Pennsylvania. One of the vari- ables is ComputerHours, which gives the number of hours the student spent on a computer during the previous week. In the sample, 447 students answered the question, and the sample mean was 16.740 hours with a standard deviation of 17.688. Find and interpret a 99% confidence interval for the mean number of hours per week that high school seniors in Pennsylvania spend on the computer. Questions: 1. Find the lower bound for this confidence interval, in other words find the value of xbar-ME. 2. Find the upper bound for this confidence interval, in other words find the value of x bar +ME
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
How Many Hours on a
Computer?
Exercise 1.24 introduces the dataset PASeniors
which includes many variables on a sample of high
school seniors in Pennsylvania. One of the vari-
ables is ComputerHours, which gives the number
of hours the student spent on a computer during
the previous week. In the sample, 447 students
answered the question, and the sample mean was
16.740 hours with a standard deviation of 17.688. Find and interpret a 99% confidence interval for the
mean number of hours per week that high school
seniors in Pennsylvania spend on the computer.
Questions:
1. Find the lower bound for this confidence interval, in other words find the value of xbar-ME.
2. Find the upper bound for this confidence interval, in other words find the value of x bar +ME
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