A group of Industrial-Organizational psychologists wanted to test if giving a motivational speech at the end of a meeting would encourage office workers to have a higher output to their work based on the number of sales each worker made. The researchers used the same 10 participants in both conditions: first data were collected after a regular meeting with no speech, and later after a meeting ending with a motivational speech. Calculate the change in sales using T2 - T1. Here are the sales numbers for the 10 participants in both conditions. Use the four steps of hypothesis testing to find out if the motivational speech increased sales using the proper t-test. Use APA format to write your conclusion.

Motivational speech T2	No speech T1
2	3
6	0
7	5
9	10
3	1
12	8
8	2
4	1
5	9
10	3

Answer rating: 100% (QA)

Define the null and alternative hypotheses The null hypothesis H0 is that there is no difference in the mean sales between the two conditions The alte... View the full answer