The paired data below consists of test scores and hours of preparation for 5 randomly selected students.                 X = HOURS  5 2 9 6 10  Y = GRADE 64 48 72 73 80                           1. Calculate r, the linear correlation coefficient.  Identify the values for each part below.  The value of n      The sum of the x-values      The sum of the y-values      The sum of the x-squared values       The sum of the y-squared values      The sum of the (xy) values     The final value of r rounded top three decimal places  2. Using a 0.05 level of significance, test the claim that there is a linear correlation between x and y.  State each of the following:     Ho and H1     The value of r, the test statistic from part 1 above      The critical value    Your decision to reject Ho or accept Ho

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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The paired data below consists of test scores and hours of preparation for 5 randomly selected students.
 

 

 

 

 

 

 

 

X = HOURS 

5

2

9

6

10

 Y = GRADE

64

48

72

73

80

 

 

 

 

 

 

 

 

 

 

 

 

 

1. Calculate r, the linear correlation coefficient.  Identify the values for each part below.

 The value of n  

   The sum of the x-values  

   The sum of the y-values 

    The sum of the x-squared values  

    The sum of the y-squared values 

    The sum of the (xy) values 

   The final value of r rounded top three decimal places 

2. Using a 0.05 level of significance, test the claim that there is a linear correlation between x and y.  State each of the following:

    Ho and H1 

   The value of r, the test statistic from part 1 above 

    The critical value 

  Your decision to reject Ho or accept Ho 

 

 

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