People take in more calories at buffets and smorgasbords than when fewer kinds of food are available. This tendency can best be explained by the concept of _____

Which of the following factors influences the rates of MZ twinning?

A) ethnicity B) a history of MZ twins on the mother's side of the family C) maternal age D) The rate of MZ twins is virtually the same in all segments of the population.

The actual mean of the set of sample scores may be used directly to estimate the point value of the population mean

Indicate whether the statement is true or false