Imagine you created a measure for how well HR promotes staff stability in your company that used a 7-point Likert scale and you wanted to understand how your company compared to what you know is the average across the industry. You collected a random sample from 30 employees which produced the sample below (Sample 1). You know the average mean for the population score is 4.8 Is your sample different from the population at an alpha of .05?

Assume a normal distribution. Do you get a different result (conclusion) if you use an Alfa of .01?

You are also interested in the likelihood (probability) of getting a score, less than 4 and greater than 6 from the sample 1 data set.

Sample # 1 6 7 7 2 5 5 6 4 5 5 5 4 7 4 5 5 7 4 3 7 4 6 4 7 4 6 5 5 6 7