To test the validity of a multiple regression model, we test the null hypothesis that the regression coefficients are all zero by applying the:

What is a use-case diagram? What are its components?

What will be an ideal response?

Cutting Tools Company makes and sells tools. One of Cutting's products is believed to be hazardous. The appropriate government agency may require Cutting to

a. export the tool and sell it only abroad. b. increase the price to cover the cost of any injuries or damage. c. reduce the price to indicate the hazard to consumers. d. remove the tool from the market.