A student success office studies whether weekly tutoring hou…

A student success office studies whether weekly tutoring hours predict final exam scores. Excel regression output gives the following: Multiple R = 0.918R Square = 0.843Significance F = 0.006Intercept = 54.327Tutoring Hours coefficient = 4.812 Which statement is correct?

A sales director predicts monthly sales Y using website visi…

A sales director predicts monthly sales Y using website visits X₁ and number of sales calls X₂. Excel output gives: Multiple R = 0.935R Square = 0.874Adjusted R Square = 0.846Significance F = 0.002Intercept = 14.775X₁ coefficient = 0.026X₂ coefficient = 1.384 Which statement correctly interprets R Square?

A city planner uses average household income X₁ and average…

A city planner uses average household income X₁ and average commute distance X₂ to predict neighborhood retail spending Y. Excel output gives: Multiple R = 0.781R Square = 0.610Adjusted R Square = 0.557Significance F = 0.064Intercept = 12.340X₁ coefficient = 0.009X₂ coefficient = −0.415 Using α = 0.05, which conclusion is correct?

A political polling firm compares the proportion of register…

A political polling firm compares the proportion of registered voters supporting a ballot measure in County 1 and County 2. Let p₁ = support proportion in County 1. Let p₂ = support proportion in County 2. The firm claims that the support proportion in County 1 is less than the support proportion in County 2. Which setup is correct?