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Posted: December 31st, 2020
Simple statistics questions, business and finance Assignment: I need help writing a research paper.
Question description
10) In a study of the effects of stress on illness, a researcher
taillied the number of colds people contracted during a 6month period
as a function of the amount of stress they reported during the same
period. There were three stress levels: minimal, moderate, and high
stress. The sums of squares appear in the following ANOVA summary
table. The mean for each condition and the number of subjects per
condition and the number of subjects per condition are also noted. Source df SS MS f Between groups 22.167 Within groups 14.750 Total 36.917 Stress level Mean N minimal 3 4 moderate 4 4 maximum 6 4 A) Complete the ANOVA summary table B) Is F obt significant at a=.05, or at a=.01 C) Perform post hoc comparisons if necessary. D)What conclusions can be drawn from the Fratio and the post hoc comparisons? E) What is the effect size? What does it mean? F) Graph the means. 12)
A researcher conducted an experiment on the effects of a new “drug” on
depression. The researcher had a control group that received nothing, a
placebo group and an experimental group that received the “drug”. A
depression inventory that provided a measure of depression on a 50point
scale was used (50 indicates that an individual is very high on
the depression variable). The ANOVA summary table appears next, along
with the mean depressing score for each condition. source df ss ms f between groups 1,202.313 within groups 2,118.00 total 3,320.313 drug condition mean n control 36.26 15 placebo 33.33 15 drug 24.13 15 A. complete the ANOVA summary table b. Is f obt significant at α= .05; at α= .01? c. Perform post hoc comparisons if necessary d. What conclusions can be drawn from the F ration and the post hoc comparisons? e. What is the effect size , and what does this mean? f. Graph the means 14)
A researcher has been hired by a pizzeria to determine which type of
crust customers prefer. The restaurant offers three types of crust:
hand tossed, thick, and thin. Following are the mean number of
linch pieces of pizza eaten for each condition from 10 subjects who had
the opportunity to eat as many pieces with each type of crust as they desired. The ANOVA summary table also follows Source df ss MS F Subject 2.75 Between 180.05 Error 21.65 Total 204.45 Crust type Mean n Handtossed 2.73 10 Think 4.20 10 thin 8.50 10 a) Complete the ANOVA summary table. b) Is Fobt significant at a = .05; at a = .01? c) Perform post hoc comparisons if necessary. d) What conclusions can be drawn from the Fratio and the post hoc comparisons? e) What is the effect size, and what does this mean? f) Graph the means
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