Question

please answer each question Clearly

ct si You are planning an experiment that will require you to run aftest State two ways that you can increase the magnitude of your study Ovint consider the formula and the defintion of effect size) For the toolbar, presa ALTF10 (PC) or ALT.FN.F10/Mac). TTT Ariel 3 (121) TE Path:p pot QUESTION 16 A group of students take the SAT then take an SAT op class, then take the SAT again. To test the hypothes that there is no diffe students' SAT scores from before to after taking the prep class, which population mean would be used? Zoro The original before) SAT score of the test group The second later) SAT score of the fest OUD The national mean SAT score QUESTION 17 A research article reports results of a study using a single sample rest as '16) -3,00. 06. How many people with

Answer 1

Q15. In order to increase the magnitude of study's size, applying t test-

t= (xm-miu)/S/square root(n)

Or, n=(t square*S square)/ (xm-miu)^2

So in order to increase the magnitude of study's size obtain large value S (sample standard deviation) , or to reduce the difference between sample mean and population mean

Q16. Ans is d .the national mean SAT score. The single sample t test will be applied .The null hypothesis taken to be the score of students after taking the Sat course, is equal to national mean SAT score.

Q17.The degree of freedom in t test is taken as

d.f=n-1 where n is sample size.

So, n=d.f +1

=16+1

=17

Thus, the test data has been collected from the sample of size 17.

Thank you!