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Week5 math533 feb_2013

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February 2013 Lecture for Week 5 of Math 533.

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Week5 math533 feb_2013

  1. 1. Week 5, Math 533 B Heard Do not copy or post without mypermission. Students may use a copy for personal use.
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  5. 5. Week 5, Math 533Go to Graph >> Probability Distribution Plot, choose the right most “View Probability”Click Ok, then click “Shaded Area” Tab
  6. 6. Week 5, Math 533Now choose Both Tails, since the Ha was “not equal to”, make sure Probability value iscorrect (it was alpha = 0.05)You can “see” your rejection regions, less than -1.960 and greater than 1.96
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  8. 8. Week 5, Math 533Go to Stat >> Basic Statistics >> 1-Sample ZChoose “Summarized data”Input Sample Size, Mean, Standard Deviation and Hypothesized MeanClick Options and Make sure your Confidence Level is Correct
  9. 9. Week 5, Math 533You get your calculated z statistic
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  11. 11. Week 5, Math 533 5.07 would be “way out in the 5.07 rejection region”
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  13. 13. Week 5, Math 533Same as first one, but this time we choose LeftTail, since the Ha was “less than”, make sureProbability value is correct (it was alpha =0.005
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  17. 17. Week 5, Math 533 -1.60 would NOT be in the rejection region -1.60
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  30. 30. Week 5, Math 533Go 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
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  35. 35. Week 5, Math 533You will need to find the mean and standarddeviation of the data and follow a similarapproach as you did in number 6.
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