Statistics Testing - Multiple choice questions 7 by ClassOf1


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									              Sub: Statistics                                                                                  Topic: Testing

              Multiple choice questions based on the confidence interval and correlation.

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              1) Find the linear correlation coefficient, r, between x and y. x: 0, 3, 3, 1, 4 y: 1, 7, 2, 5, 5

              a. r=.333

              b. r=.749

              c. r=.974

              d. r=.497

              Answer: D

              2) Express the confidence interval .600, .800 in the form p-hat plus and minus E.

              a. .8 plus and minus .2

              b. .6 plus and minus .2

              c. .6 plus and minus .3

              d. .7 plus and minus .1

              Answer: D

              3) Find the critical value. 99% confidence, sigma is 
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