The mall has a set of data with employee age X and the corre

The mall has a set of data with employee age (X) and the corresponding number of annual on-the-job-accidents(Y). Analysis on the set finds that the regression equation is Y=100-3X. What is the likely number of accidents for someone aged 30?

97

100

10

The null hypothesis is rejected if the p value is:

>5

<5

<.05

>-5%

consider the following regression equation between Y and X:

              Y = 4.622X -100

Selected this equation shows a positive correlation between X and Y

this equation shows a negative correlation between X and Y

The regression equation cannot provide information about the type of correlation that exists between the two variable.

Solution

Y = 100-3x

Plug in 30 for age x

y = 100-90 =

10

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The null hypothesis is rejected if the p value is:<.05

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this equation shows a positive correlation between X and Y

as slope is positive.