Question

Please I need this before 5 let be in a copy and paste format!!!!!!!!!!!!

SPSS file ‘sleep-fall2018’ contains data representing the average number of hours of sleep in the last two nights by 8 depressed patients and 9 non-depressed patients. (Group 1 is ‘depressed’ and group 2 is ‘non-depressed.’) The researcher is interested in whether the two groups reliably differ in the amount of sleep they get.

A. (2 pts) What kind of statistical test is appropriate here? Why?

B. (4 pts) What are the null and alternative hypotheses? (Make these specific to this question.)

C. (4 pts) Report the mean and sample standard deviation for each sample.

D. (1 pt) Is the assumption of homogeneity of variances met?

E. (3 pts) What is tobt? How many degrees of freedom are there? What is tcrit (( = 0.052tail)?

F. (1 pt) Report the p value (significance) of tobt from SPSS.

G. (3 pts) What can the researcher conclude about the amount of sleep depressed vs. non-depressed people get? Justify your answer.

H. (4 pts) By hand, calculate the size of the effect (omega squared) of the study and interpret the effect size. Show your work, including the formula for omega squared.

Answer 1

solution:

a) Test for distinction of means is utilized to test the speculation.

Since test sizes are distinction and two gatherings are free.

b) H0: the two gatherings dependably no vary in the measure of rest they get.

H1: the two gatherings dependably vary in the measure of rest they get.

c)

Expressive Statistics: Depressed, Non-discouraged

Add up to Sum of

Variable Count Mean SE Mean StDev Variance Sum Squares

Discouraged 8 7.562 0.192 0.542 0.294 60.500 459.590

Non-discouraged 9 6.933 0.138 0.415 0.172 62.400 434.020

d) Test the homogenity of fluctuation:

H0: Two populatin Varinaces are same

H1: Two populace fluctuations are not same

F = S1^2/S2^2 = 0.542/0.415 = 1.306

The basic estimation of the test : F0 = 3.50 at (7,8)df

Here F < F0 So we accpet H0. In this manner the two populace fluctuations are same