In the Bass model for forecasting the adoption of a new product, ...

[gonzo233]

In the Bass model for forecasting the adoption of a new product, the objective function
 a. minimizes the sum of forecast errors.
  b. minimizes the sum of squared forecast errors.
  c. maximizes the number of adoptions.
  d. maximizes the number of adoptions and imitations.

Question 2

Before the rush began for Christmas shopping, a department store noted that the percentage of its customers who use the store's credit card, the percentage of those who use a major credit card, and the percentage of those who pay cash are the same. During the Christmas rush, a random sample of 150 shoppers was selected. Of those, 46 used the store's credit card, 43 used a major credit card, and 61 paid cash. Use  = .05 to determine if the methods of payment have changed during the Christmas rush.

[ebenov]

Answer to Question 1

B

Answer to Question 2

Chi-square = 3.72 < 5.99; has not changed

[gonzo233]

Gracias!

[xiaomengxian]

Wow, this really help