Which of the following is needed before a confidence interval can be established for a population ...

Which of the following is needed before a confidence interval can be established for a population mean?
 a. A confidence level
  b. A point estimate of the population mean
  c. An estimate of the sampling error associated with the sample mean
  d. All of the above.
  e. Both a and b.

Question 2

Anheuser-Busch uses Hispanic actors, as well as both Spanish and English language in its ads that are targeting Hispanic consumers. This is an example of a company using ____ to appeal to a target market.
 a. multicultural marketing
  b. ethnocentric marketing
  c. ethnic stereotypes
  d. accommodation theory
  e. subcultural bias