Depression and insomnia often go hand-in-hand, and sometimes it is unclear which of the two should be the primary subject of treatment in individuals suffering from insomnia. Mendoza & Company, a national pharmaceutical firm, has positioned itself as a specialist in the production of both antidepressants and sleeping pills. Mendoza's current business model describes the following breakdown of America's approximately 50 million adults suffering from insomnia: 17% use both antidepressants and sleeping pills regularly, 24% use only antidepressants regularly, 15% use only sleeping pills regularly, and the remaining 44% use neither antidepressants nor sleeping pills regularly. A recent issue of the psychiatry journal Patterns contains a study on insomnia. In the study, 200 American adults suffering from insomnia (but otherwise chosen at random) were asked about their use of antidepressants and sleeping pills. The breakdown of their answers is given by the top row of numbers in the table below. (These numbers are the frequencies observed for the sample of 200 insomniacs.) The second row of numbers gives the expected frequenciesunder the hypothesis that Mendoza's model is correct. The bottom row of numbers contains the following value for each of the categories of medication use. −fOfE2 fE = −Observed frequencyExpected frequency2 Expected frequency Part 1 Fill in the missing values in the table. Round your responses for the expected frequencies to two or more decimal places. Round your −fOfE2fE responses to three or more decimal places. Send data to Excel Both Only antidepressants Only sleeping pills Neither Total Observed frequency fO fO 40 fO 46 fO 23 fO 91 200 Expected frequency fE fE fE fE 30.00 fE 88.00 −fOfE2fE −fOfE2fE −fOfE2fE −fOfE2fE 1.633 −fOfE2fE 0.102 Part 2 Answer the following to summarize the test of the hypothesis that Mendoza's model is correct. Use the 0.05 level of significance for the test. (a) Determine the type of test statistic to use. Type of test statistic: ▼(Choose one) (b) Find the value of the test statistic. (Round your answer to two or more decimal places.) (c) Find the critical value. (Round your answer to two or more decimal places.) (d)Can we conclude that the percentages given in Mendoza's model are incorrect? Yes No

Depression and insomnia often go hand-in-hand, and sometimes it is unclear which of the two should be the primary subject of treatment in individuals suffering from insomnia. Mendoza & Company, a national pharmaceutical firm, has positioned itself as a specialist in the production of both antidepressants and sleeping pills. Mendoza's current business model describes the following breakdown of America's approximately 50 million adults suffering from insomnia: 17% use both antidepressants and sleeping pills regularly, 24% use only antidepressants regularly, 15% use only sleeping pills regularly, and the remaining 44% use neither antidepressants nor sleeping pills regularly. A recent issue of the psychiatry journal Patterns contains a study on insomnia. In the study, 200 American adults suffering from insomnia (but otherwise chosen at random) were asked about their use of antidepressants and sleeping pills. The breakdown of their answers is given by the top row of numbers in the table below. (These numbers are the frequencies observed for the sample of 200 insomniacs.) The second row of numbers gives the expected frequenciesunder the hypothesis that Mendoza's model is correct. The bottom row of numbers contains the following value for each of the categories of medication use. −fOfE2 fE = −Observed frequencyExpected frequency2 Expected frequency Part 1 Fill in the missing values in the table. Round your responses for the expected frequencies to two or more decimal places. Round your −fOfE2fE responses to three or more decimal places. Send data to Excel Both Only antidepressants Only sleeping pills Neither Total Observed frequency fO fO 40 fO 46 fO 23 fO 91 200 Expected frequency fE fE fE fE 30.00 fE 88.00 −fOfE2fE −fOfE2fE −fOfE2fE −fOfE2fE 1.633 −fOfE2fE 0.102 Part 2 Answer the following to summarize the test of the hypothesis that Mendoza's model is correct. Use the 0.05 level of significance for the test. (a) Determine the type of test statistic to use. Type of test statistic: ▼(Choose one) (b) Find the value of the test statistic. (Round your answer to two or more decimal places.) (c) Find the critical value. (Round your answer to two or more decimal places.) (d)Can we conclude that the percentages given in Mendoza's model are incorrect? Yes No

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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Related questions

Question

million adults suffering from insomnia:

17%

use both antidepressants and sleeping pills regularly,

24%

use only antidepressants regularly,

15%

use only sleeping pills regularly, and the remaining

44%

use neither antidepressants nor sleeping pills regularly.

A recent issue of the psychiatry journal Patterns contains a study on insomnia. In the study,

200

American adults suffering from insomnia (but otherwise chosen at random) were asked about their use of antidepressants and sleeping pills. The breakdown of their answers is given by the top row of numbers in the table below. (These numbers are the frequencies observed for the sample of

200

insomniacs.) The second row of numbers gives the expected frequenciesunder the hypothesis that Mendoza's model is correct. The bottom row of numbers contains the following value for each of the categories of medication use.

−fOfE2

=	−Observed frequencyExpected frequency2

Expected frequency

Part 1

Fill in the missing values in the table. Round your responses for the expected frequencies to two or more decimal places. Round your

−fOfE2fE

responses to three or more decimal places.

Send data to Excel

	Both	Only antidepressants	Only sleeping pills	Neither	Total
Observed frequency fO	fO 40	fO 46	fO 23	fO 91	200
Expected frequency fE	fE	fE	fE 30.00	fE 88.00
−fOfE2fE	−fOfE2fE	−fOfE2fE	−fOfE2fE 1.633	−fOfE2fE 0.102

Part 2

Answer the following to summarize the test of the hypothesis that Mendoza's model is correct. Use the

0.05

level of significance for the test.

(a) Determine the type of test statistic to use. Type of test statistic: ▼(Choose one)
(b) Find the value of the test statistic. (Round your answer to two or more decimal places.)
(c) Find the critical value. (Round your answer to two or more decimal places.)
(d)Can we conclude that the percentages given in Mendoza's model are incorrect? Yes No