A department store sampled the purchase amounts (in dollars) of 50 customers during a recent Saturday sale.
Question:
(a) Interpret the estimated intercept, slope, and value of se.
(b) Should managers conclude that customers who use coupons spend statistically significantly more than those who do not?
(c) Suppose the comparison had been done using a pooled two-sample t-test. What would be the value of the t-statistic?
(d) Suppose the comparison had been done using a dummy variable (coded as 1 for coupon users and 0 otherwise) rather than the variable Coupon Status. Give the values of b0, b1, and the t-statistic for the estimated slope.
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Related Book For
Statistics For Business Decision Making And Analysis
ISBN: 9780321890269
2nd Edition
Authors: Robert Stine, Dean Foster
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