The normal model N(58,21) describes the distribution of weights of chicken eggs in grams.

Suppose that the weight of a randomly selected chicken egg has a z-score of 1.78.

What is the weight of this egg in grams? Round to the nearest hundredth gram.

• A. 65.25 grams
• B. 79.50 grams
• C. 89.50 grams
• D. 95.38 grams

Separate question*

Which of the following characteristics are required for the binomial model?

(Note that you can check more than one answer.)

A. The probability of success is the same at each trial.
B. The trials must be independent.
C. The probability of success and of failure must be equal.
D. There are a fixed number of trials.