(b) Find the critical value(s). Round the answer(s) to three decimal places. If there is more than one critical value, separate them with commas. Critical value(s):

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(b) Find the critical value(s). Round the answer(s) to three decimal
places. If there is more than one critical value, separate them with
commas.
Critical value(s):
Transcribed Image Text:(b) Find the critical value(s). Round the answer(s) to three decimal places. If there is more than one critical value, separate them with commas. Critical value(s):
Sleep Time A person read that the average number of hours an adult
sleeps on Friday night to Saturday morning was 7.1 hours. The researcher feels
that college students do not sleep 7.1 hours on average. The researcher
randomly selected 16 students and found that on average they slept 8.1 hours.
The standard deviation of the sample is 1.2 hours. At a=0.10, is there enough
evidence to say that college students do not sleep 7.1 hours on average?
Assume that the population is approximately normally distributed. Use the
critical value method and tables.
Transcribed Image Text:Sleep Time A person read that the average number of hours an adult sleeps on Friday night to Saturday morning was 7.1 hours. The researcher feels that college students do not sleep 7.1 hours on average. The researcher randomly selected 16 students and found that on average they slept 8.1 hours. The standard deviation of the sample is 1.2 hours. At a=0.10, is there enough evidence to say that college students do not sleep 7.1 hours on average? Assume that the population is approximately normally distributed. Use the critical value method and tables.
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