A group of researchers wants to examine whether a medical treatment affects people’s sleeping hours. They know that on average people have 7.88 hours of sleep in a day. The SD is 2.2 hours. They recruited 100 participants who were involved in the treatment and recorded their sleeping hours. They found that these 100 participants sleep 8.38 hours per day. Does this medical treatment make a difference? Work at the 5% level of significance.

A group of researchers wants to examine whether a medical treatment affects people’s sleeping hours. They know that on average people have 7.88 hours of sleep in a day. The SD is 2.2 hours. They recruited 100 participants who were involved in the treatment and recorded their sleeping hours. They found that these 100 participants sleep 8.38 hours per day. Does this medical treatment make a difference? Work at the 5% level of significance.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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