DQuestion 9 0.3 pts The linear regression equation for a set of data is y 2.3xo+

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DQuestion 9 0.3 pts The linear regression equation for a set of data is y 2.3xo+ 5. The value of y for this data set is 10.1 , and n = 10 . Use a = .05 . If the linear correlation coefficient for this data is r = .521 , what is the best y-value for x = 5 ? (Round to the nearest tenth.) DQuestion 10 0.3 pts The linear regression equation for a set of data is ý - 2.3x0+ 5. The value of ý for this data set is 10.1 , and n = 10 . Use a = .05 . If the linear correlation coefficient for this data is r .972, what is the best y-value for x 5 ? (Round to the nearest tenth.)

Explanation / Answer

For n = 10 and 0.05 level of significance,

Critical correlation coefficient value = 0.632

9. Correlation Coefficient is not significant so y bar will be the best predictor for any value of Y.

Hence,

Best y value = 10.1

10. Here the correlation Coefficient is significant so we can use regression line to find the value of Y.

At x = 5,

Y = 2.3(5) + 5

Y = 16.5

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