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If there is no difference between the distributions of scores in two groups, your effect size will be equal to ________.

High school attendance study A high school conducts an experiment to test if there is a difference between the number of times their students are absent in the fall compared to the winter months.   You have data for the following 5 students:   Data STUDENT FALL WINTER 1 3 2 2 4 3 3 2 2 4 2 1 5 1 0   What do you conclude about this school’s absences? (Assume standard

The t test for independent means is used when each group is tested ____________.

Which of the following is considered to be a large effect for Cohen’s d? Effect Sizes [a] [b] [c] [d] (Write you answer below to 2 decimal places; be careful not to typo)

A study looks at the average wait times (minutes) in hospital Emergency Rooms before and after a training programming for staff. Below is the data that was collected (note: N/A means data is missing because the hospital failed to report it).   ER Wait Times (in mins) Pre-Training Post-Training Hospital 1 15 14 Hospital 2 10 11 Hospital 3 27 26 Hospital 4 43 28 Hospital 5 37 27 Hospital 6 17 15 Hospital 7 28 N/A Hospital 8 12 15 Hospital 9 19 11 Hospital 10 N/A 30   What are the degrees of freedom for this test?

If you found t(70) = 1.70, how many participants were there?

A study looks at several companies’ profits before and after the introduction of a environmentally friendly initiative. Below is the data that was collected (note: N/A means data is missing because the company failed to report it).   Profit of Companies (in millions of dollars) Pre-Initiative Post-Initiative Company 1 12.7 N/A Company 2 10.4 12.5 Company 3 9.5 8.5 Company 4 8.3 8.4 Company 5 8.6 8.9 Company 6 N/A 10.7 Company 7 6.9 6.5 Company 8 7.7 N/A Company 9 10.1 9.8 Company 10 11.8 12.1 Company 11 N/A 14.5 Company 12 8.9 9.7   What are the degrees of Freedom for this test?

Bill creates a new kind of battery and he wants to compare it to Energizer. He randomly assigns 10 of his friends to test his new batter and 10 of his friends to test energizer batteries. His friends then rate measure the number of hours the batteries run. With his new battery, his friends report an average of [a] hours of battery life, with a standard deviation of [a2]. With Energizer his other friends report an average of [b] hours of battery life, with a standard deviation of [b2].    What is the effect size of the difference between these two batteries? (Write your answer below, to two decimal places as a positive value; sign doesn’t matter)

High school attendance study A high school conducts an experiment to test if there is a difference between the number of times their students are absent in the fall compared to the winter months.   You have data for the following 5 students:   Data STUDENT FALL WINTER 1 2 1 2 0 2 3 1 2 4 2 2 5 0 3   What do you conclude about this school’s absences? (Assume standard