Help for Insomniacs A recent study shows that just one session of cognitive behavioral therapy can help people with insomnia.1 In the study, forty people who had been diagnosed with insomnia were randomly divided into two groups of 20 each. People in one group received a one-hour cognitive behavioral therapy session while those in the other group received no treatment. Three months later, 14 of those in the therapy group reported sleep improvements while only 3 people in the other group reported improvements. (a) Fill in the following two-way table for this data. Improvement No improvement Total Therapy Enter your answer in accordance to item (a) of the question statement Enter your answer in accordance to item (a) of the question statement Enter your answer in accordance to item (a) of the question statement No therapy Enter your answer in accordance to item (a) of the question statement Enter your answer in accordance to item (a) of the question statement Enter your answer in accordance to item (a) of the question statement Total Enter your answer in accordance to item (a) of the question statement Enter your answer in accordance to item (a) of the question statement Enter your answer in accordance to item (a) of the question statement (b) What proportion of the 40 people in the study reported sleep improvement? Round your answer three decimal places. Enter your answer in accordance to item (b) of the question statement (c) Of the people receiving the therapy session, what proportion reported sleep improvements? Round your answer three decimal places. Enter your answer in accordance to item (c) of the question statement

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Help for Insomniacs

A recent study shows that just one session of cognitive behavioral therapy can help people with insomnia.¹ In the study, forty people who had been diagnosed with insomnia were randomly divided into two groups of 20 each. People in one group received a one-hour cognitive behavioral therapy session while those in the other group received no treatment. Three months later, 14 of those in the therapy group reported sleep improvements while only 3 people in the other group reported improvements.

(a) Fill in the following two-way table for this data.

	Improvement	No improvement	Total
Therapy	Enter your answer in accordance to item (a) of the question statement	Enter your answer in accordance to item (a) of the question statement	Enter your answer in accordance to item (a) of the question statement
No therapy	Enter your answer in accordance to item (a) of the question statement	Enter your answer in accordance to item (a) of the question statement	Enter your answer in accordance to item (a) of the question statement
Total	Enter your answer in accordance to item (a) of the question statement	Enter your answer in accordance to item (a) of the question statement	Enter your answer in accordance to item (a) of the question statement

(b) What proportion of the 40 people in the study reported sleep improvement?

Round your answer three decimal places.

Enter your answer in accordance to item (b) of the question statement

(c) Of the people receiving the therapy session, what proportion reported sleep improvements?

Round your answer three decimal places.

Enter your answer in accordance to item (c) of the question statement

(d) What proportion of people who did not receive therapy reported sleep improvements?

Round your answer three decimal places.

Enter your answer in accordance to item (d) of the question statement

(e) If we use to denote the proportion from part (c) and use to denote the proportion from part (d), calculate the difference in proportion reporting sleep improvements, , between those getting therapy and those not getting therapy.

Round your answer three decimal places.

Enter your answer in accordance to item (d) of the question statement

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