t test

  1. D

    Combined t test for intercept and gradient - Unequal sample sizes, equal variance

    I work in an industry where sales are related to temperature. My colleague has performed two regressions for sales: Monday to Thursday sales= a1 + b1*Temp Friday sales = a2 + b2*Temp I'm trying to determine whether Friday Sales are the same as Monday to Thursday sales. By 'the same' I...