5. Week 5, Math 533
Go to Graph >> Probability Distribution Plot, choose the right most “View Probability”
Click Ok, then click “Shaded Area” Tab
6. Week 5, Math 533
Now choose Both Tails, since the Ha was “not equal to”, make sure Probability value is
correct (it was alpha = 0.05)
You can “see” your rejection regions, less than -1.960 and greater than 1.96
8. Week 5, Math 533
Go to Stat >> Basic Statistics >> 1-Sample Z
Choose “Summarized data”
Input Sample Size, Mean, Standard Deviation and Hypothesized Mean
Click Options and Make sure your Confidence Level is Correct
9. Week 5, Math 533
You get your calculated z statistic
13. Week 5, Math 533
Same as first one, but this time we choose Left
Tail, since the Ha was “less than”, make sure
Probability value is correct (it was alpha =
0.005
30. Week 5, Math 533
Go to Graph >> Probability Distribution Plot, choose the right most “View Probability”
Now Choose “t” for Distribution and input Degrees of Freedom (n-1), now go to
“Shaded Area” tab and choose Left Tail and input 0.05 for probability