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STA2014 Extra Credit Read "Characteristics of the Chi-Square Distribution" in the middle of page 516 and look at Figure 1 and Figure 2 (top of page...

(To get 1  on your calculator type 1 ÷ 7)

·     ???????????????????????????????? → ????????????????????????????????????????

????????:  ????????2  ???????????????????????? − ????????????????????????????????

????????2  ???????????????????????? − ????????????????????????????????

????????????????????????????????????????????????????????????????:  ????????1

????????????????????????????????????????????????????????????????:  ????????2

????????????????:  7 − 1

  • Notice that the degrees of freedom are equal to the number of categories minus one (7 − 1).

Now that you understand the Chi-Square Goodness-of-Fit Test, do the “Extra Credit Quiz” in MyMathLabs. It will become available at 7:30 PM on 4/20/16 and will remain open until 9:00 PM. You will only have 2 attempts at the Quiz. I will take your best score. Each problem is worth up to +5% points on the final.  Good luck!

  • Attachment 1
  • Attachment 2
STA2014 Extra CreditRead “Characteristics of the Chi-Square Distribution” in the middle of page 516 and look at Figure 1 andFigure 2 (top of page 517).Read the Definition of a “goodness-of-fit test” in the middle of page 517.Read the “Test Statistics for Goodness-of-Fit Tests” at the bottom of page 518 and continued on the topof page 519.Read “The Goodness-of-Fit Test” Step 1 on Page 519.Read Example 3 on page 520. We will do the following for Step 3 Put the frequencies in 1 and the expected counts in 2 .269327554350 1500 ∗0.1901500 ∗0.2291500 ∗0.3561500 ∗0.225 → ↓2− 2 − : 1: 2: 4 − 1 Notice that the degrees of freedom are equal to the number of categories minus one (4 − 1). Read Example 4 on page 521. We will do the following for Step 3 Put the frequencies in 1 and the expected counts in 2 .46 500 ∗ 76 500 ∗ 83 500 ∗ 81 500 ∗ 81 500 ∗ 80 500 ∗ 53 500 ∗ 1 7171717171717 (To get 1 on your calculator type 1 ÷ 7)7 → ↓2− 2 − : 1: 2: 7 − 1 Notice that the degrees of freedom are equal to the number of categories minus one (7 − 1). Now that you understand the Chi-Square Goodness-of-Fit Test, do the “Extra Credit Quiz” inMyMathLabs. It will become available at 7:30 PM on 4/20/16 and will remain open until 9:00 PM. Youwill only have 2 attempts at the Quiz. I will take your best score. Each problem is worth up to +5%points on the final. Good luck!
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