Suppose that the average time spent per day with digital media several years ago was 3 hours and 27 minutes. For last year, a random sample of 20 adults in a certain region spent the numbers of hours per day with digital media given in the accompanying table. Preliminary data analyses indicate that the t-interval procedure can reasonably be applied. Find and interpret a 95% confidence interval for last year's mean time spent per day with digital media by adults of the region. (Note: x=5.45 hr and s=2.20 hr.) Click here to view the digital media times. LOADING... Click here to view page 1 of the t-table. LOADING... Click here to view page 2 of the t-table. LOADING... Question content area bottom Part 1 The 95% confidence interval is from enter your response here hour(s) to enter your response here hour(s). (Round to two decimal places as needed.) Part 2 Interpret the 95% confidence interval. Select all that apply. A. With 95% confidence, the mean amount of time spent per day on digital media last year by all adults in the region is between the interval's bounds. B. 95% of all adults in the region spent amounts of time per day on digital media last year that are between the interval's bounds. C. 95% of all possible random samples of 20 adults in the region have mean amounts of time spent per day on digital media last year that are between the interval's bounds. D. There is a 95% chance that the mean amount of time spent per day on digital media last year by all adults in the region is between the interval's bounds.
Suppose that the average time spent per day with digital media several years ago was 3 hours and 27 minutes. For last year, a random sample of 20 adults in a certain region spent the numbers of hours per day with digital media given in the accompanying table. Preliminary data analyses indicate that the t-interval procedure can reasonably be applied. Find and interpret a 95% confidence interval for last year's mean time spent per day with digital media by adults of the region. (Note: x=5.45 hr and s=2.20 hr.) Click here to view the digital media times. LOADING... Click here to view page 1 of the t-table. LOADING... Click here to view page 2 of the t-table. LOADING... Question content area bottom Part 1 The 95% confidence interval is from enter your response here hour(s) to enter your response here hour(s). (Round to two decimal places as needed.) Part 2 Interpret the 95% confidence interval. Select all that apply. A. With 95% confidence, the mean amount of time spent per day on digital media last year by all adults in the region is between the interval's bounds. B. 95% of all adults in the region spent amounts of time per day on digital media last year that are between the interval's bounds. C. 95% of all possible random samples of 20 adults in the region have mean amounts of time spent per day on digital media last year that are between the interval's bounds. D. There is a 95% chance that the mean amount of time spent per day on digital media last year by all adults in the region is between the interval's bounds.
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
Suppose that the average time spent per day with digital media several years ago was
3
hours and
27
minutes. For last year, a random sample of
20
adults in a certain region spent the numbers of hours per day with digital media given in the accompanying table. Preliminary data analyses indicate that the t-interval procedure can reasonably be applied. Find and interpret a
95%
confidence interval for last year's mean time spent per day with digital media by adults of the region. (Note:
x=5.45
hr and
s=2.20
hr.)Click here to view the digital media times.
LOADING...
Click here to view page 1 of the t-table.
Click here to view page 2 of the t-table.
LOADING...
LOADING...
Question content area bottom
Part 1
The
95%
confidence interval is from
enter your response here
hour(s) to
enter your response here
hour(s).(Round to two decimal places as needed.)
Part 2
Interpret the
95%
confidence interval. Select all that apply.With
95%
confidence, the mean amount of time spent per day on digital media last year by all adults in the region is between the interval's bounds.95%
of all adults in the region spent amounts of time per day on digital media last year that are between the interval's bounds.95%
of all possible random samples of
20
adults in the region have mean amounts of time spent per day on digital media last year that are between the interval's bounds.There is a
95%
chance that the mean amount of time spent per day on digital media last year by all adults in the region is between the interval's bounds.Digital Media Times
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5.5
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6.4
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2.6
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6.8
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2.6
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8.1
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9.5
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7.4
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6.0
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9.5
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4.5
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2.8
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5.1
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4.4
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6.9
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D
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