USE THE 8-STEP HYPOTHESIS TESTINGRefer to the study by Carter et al. [A-9], who investigated the effect of age at onset of bipolar disorderon the course of the illness. One of the variables studied was subjects' family history. Table 3.4.1shows the frequency of a family history of mood disorders in the two groups of interest: early age atonset (18 years or younger) and later age at onset (later than 18 years).Family History of MoodDisordersEarly ≤ 18(E)28194153Later > 18 (L)35384460141Total635785113Negative (A)Bipolar disorder (B)Unipolar (C)Unipolar and bipolar (D)Total177318Source: Tasha D. Carter, Emanuela Mundo, Sagar V. Parkh, and James L. Kennedy,"Early Age at Onset as a Risk Factor for Poor Outcome of Bipolar Disorder," Journal ofPsychiatric Research, 37 (2003), 297-303.Can we conclude on the basis of these data that subjects 18 or younger differ from subjects older than18 with respect to family histories of mood disorders? Let a = .05.

Given information: Early < 18(E) Later > 18(L) Total Negative (A) 28 35 63 Bipolar…

Answered: USE THE 8-STEP HYPOTHESIS TESTING Refer…

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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The following data are from a hypothetical experiment in which one group of students took a quiz in a well-lit room and another group of students took the quiz in dimly lit room. What test should you perform? Do these data indicate a significant difference between the treatments (room lighting) at the .05 level of significance?
A sports psychologist studied the effect of a motivational program on number of injuries in one year among players of three different sports (baseball, football, and basketball). Players were randomly assigned to one of two conditions: either participate in a motivational program or none (control). Data was collected on the number of injuries sustained by each athlete that season. Question: If p = .024 for the main effect of sports, what should the researcher conclude?
Research indicates that stress levels are lowered when petting a dog. . A mood inventory questionnaire is administered to a group of 20-29 - year olds with no do present in the room, and again a month later the same mood questionnaire is administered to the same people with a dog present in the room. Is there a significant difference in the mood scores for when the dog was present or not? Test with a = .05 for two tails. Person No Dog in Room Dog in Room A 12 14 B 8 7 C 10 13 D 9 9 E 7 13 F 10 12
Are nursing salaries in Tampa, Florida, lower than those in Dallas, Texas? Salary data show staff nurses in Tampa earn less than staff nurses in Dallas (The Tampa Tribune, January 15, 2007). Suppose that in a follow-up study of 40 staff nurses in Tampa and 50 staff nurses in Dallas you obtain the following results. Tampa n1 = 40 X1 = $56,100 S1 = $6000 Dallas n2 = 50 X2 = $59,400 S2 = $7000 Complete the confidence interval of the data set
Serum estradiol is an important risk factor for breast cancer in postmenopausal women. To better understand the etiology of breast cancer, serum-estradiol samples were collected from 25 premenopausal women (at about the same time period of the menstrual cycle) of whom 10 were Caucasian and 15 were African American. The data are shown in Table 7.3. The distribution of serum estradiol is usually highly skewed (especially for premenopausal women), and we are reluctant to assume normality. Table 7.3 Serum estradiol and ethnicity in 25 premenopausal women, where 0=Caucasian and 1=African-American ID Serum_estradiol Ethic 1 94 0 2 54 1 3 31 0 4 21 1 5 46 1 6 56 0 7 18 1 8 19 1 9 12 1 10 14 0 11 25 0 12 35 1 13 22 1 14 71 0 15 43 1 16 35 1 17 42 1 18 50 1 19 44 1 20 41 0 21 28 0 22 65 0 23 31 0 24…
QUESTION 18 A researcher notes that there seems to be a difference in the prevalence of high blood pressure among college-educated individuals who consume low amounts of processed foods and the prevalence of individuals who only have a high school education and consume high amounts of processed foods. Use the appropriate hypothesis to test for the independence of the two independent variables presented here at the 5% significance level to ensure confounding has not influenced the study’s results. Then, interpret your response. Diet Low in Processed Foods Normal BP High BP Total College Education 124 55 179 High School Education 69 152 221 Total 193 207 400 Diet High in Processed Foods Normal BP High BP Total College Education 64 85 149 High School Education 98 153 251 Total 162 238 400 The chi square value of 37.724 is higher than the chi square value of 3.84; therefore, we do not reject H0 at the 5% level and reject H1, which states that level…
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