On this recommendation, a researcher wanted to estimate the mean sedentary time (sitting while watching TV, in a car, or while playing gadgets) of adolescents at 95% confidence level. In the study, a random sample of 25 adolescents spent an average of 8.76 hours per day being sedentary. Suppose that sedentary times are normally distributed with a standard deviation of 1.75 hour per day. ● The 95% confidence interval for the mean sedentary time (hours per day) of adolescents is [Select]
On this recommendation, a researcher wanted to estimate the mean sedentary time (sitting while watching TV, in a car, or while playing gadgets) of adolescents at 95% confidence level. In the study, a random sample of 25 adolescents spent an average of 8.76 hours per day being sedentary. Suppose that sedentary times are normally distributed with a standard deviation of 1.75 hour per day. ● The 95% confidence interval for the mean sedentary time (hours per day) of adolescents is [Select]
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 58E: What is meant by the sample space of an experiment?
Related questions
Question
![According to WHO, adolescents should spend at least an hour per day of moderate-to-vigorous intensity
physical activity and should limit the time spent being sedentary.
Based on this recommendation, a researcher wanted to estimate the mean sedentary time (sitting while
watching TV, in a car, or while playing gadgets) of adolescents at 95% confidence level. In the study, a random
sample of 25 adolescents spent an average of 8.76 hours per day being sedentary.
Suppose that sedentary times are normally distributed with a standard deviation of 1.75 hour per day.
✔
●
The 95% confidence interval for the mean sedentary time (hours per day) of adolescents is
[ Select]
Complete the statement:
If we consider all possible samples of the same size and a 95% confidence interval is obtained from each sample,
then [Select]
For a second study, what sample size (minimum) would you recommend so that the estimated mean
sedentary time is within 0.5 hour at 95% confidence level? [Select]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8ea9ad8a-b3e5-4e00-ada7-546c74e1bc34%2F79c83f27-c90d-4480-a5b4-bafecc7de0fa%2Fcwjln8u_processed.jpeg&w=3840&q=75)
Transcribed Image Text:According to WHO, adolescents should spend at least an hour per day of moderate-to-vigorous intensity
physical activity and should limit the time spent being sedentary.
Based on this recommendation, a researcher wanted to estimate the mean sedentary time (sitting while
watching TV, in a car, or while playing gadgets) of adolescents at 95% confidence level. In the study, a random
sample of 25 adolescents spent an average of 8.76 hours per day being sedentary.
Suppose that sedentary times are normally distributed with a standard deviation of 1.75 hour per day.
✔
●
The 95% confidence interval for the mean sedentary time (hours per day) of adolescents is
[ Select]
Complete the statement:
If we consider all possible samples of the same size and a 95% confidence interval is obtained from each sample,
then [Select]
For a second study, what sample size (minimum) would you recommend so that the estimated mean
sedentary time is within 0.5 hour at 95% confidence level? [Select]
![According to WHO, adolescents should spend at least an hour per day of moderate-to-vigorous intensity
physical activity and should limit the time spent being sedentary.
Based on this recommendation, a researcher wanted to estimate the mean sedentary time (sitting while
watching TV, in a car, or while playing gadgets) of adolescents at 95% confidence level. In the study, a random
sample of 25 adolescents spent an average of 8.76 hours per day being sedentary.
Suppose that sedentary times are normally distributed with a standard deviation of 1.75 hour per day.
●
●
The 95% confidence interval for the mean sedentary time (hours per day) of adolescents is
[Select]
Complete the statement:
If we consider all possible samples of the same size and a 95% confidence interval is obtained from each sample,
then
[Select]
[Select]
Neither A nor B
Both A and B
. For a
A. 95% of these intervals would contain the true mean sedentary time of adolescents estimated mean
B. 95% of all adolescents would have sedentary times within the interval estimate
sedentary time is within 0.5 hour at 95% confidence level? [Select]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8ea9ad8a-b3e5-4e00-ada7-546c74e1bc34%2F79c83f27-c90d-4480-a5b4-bafecc7de0fa%2Fznqn51a_processed.jpeg&w=3840&q=75)
Transcribed Image Text:According to WHO, adolescents should spend at least an hour per day of moderate-to-vigorous intensity
physical activity and should limit the time spent being sedentary.
Based on this recommendation, a researcher wanted to estimate the mean sedentary time (sitting while
watching TV, in a car, or while playing gadgets) of adolescents at 95% confidence level. In the study, a random
sample of 25 adolescents spent an average of 8.76 hours per day being sedentary.
Suppose that sedentary times are normally distributed with a standard deviation of 1.75 hour per day.
●
●
The 95% confidence interval for the mean sedentary time (hours per day) of adolescents is
[Select]
Complete the statement:
If we consider all possible samples of the same size and a 95% confidence interval is obtained from each sample,
then
[Select]
[Select]
Neither A nor B
Both A and B
. For a
A. 95% of these intervals would contain the true mean sedentary time of adolescents estimated mean
B. 95% of all adolescents would have sedentary times within the interval estimate
sedentary time is within 0.5 hour at 95% confidence level? [Select]
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