Background waking sleepers early scientists have

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Chapter 22 / Exercise 2
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Question 3 Background :Waking Sleepers EarlyScientists have discovered increased levels of the hormone adrenocorticotropin in people just before they awake from sleeping. In astudy, 15 people were monitored during their sleep after being told that they would be woken at a particular time. One hour before thedesignated wake-up time, the adrenocorticotropin level (pg/mL) was measured, resulting in the sample mean of 37.3 pg/mL and thestandard deviation of 13.9 pg/mL.Question 3 Subquestions3.aThe sample mean of 37.3 pg/mL is an estimate of the population mean adrenocorticotropin level in people one hour prior to theirdesignated wake-up time. Report the standard error of the sample mean to four decimal places (include units).
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Chapter 22 / Exercise 2
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3/points3 Student Answer:
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3.cProvide an appropriate interpretation of the resulting 90% confidence interval.
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3.dWhich of the following interpretations regarding the 90% confidence level are correct? Select all that are correct.

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