Assume that male and female births are equally likely and that the birth of any child does not affect the probability of the gender of any other children. Suppose that 950 couples each have a baby; find the mean and standard deviation for the number of boys in the 950 babies.

Assessment includes a. interviews, recorded conversations, videos, frequency counts, and time samples. b. formal standardized tests and developmental screening tools. c. various types of documented observations, documentation of child work, checklists, rating scales, and standardized tests. d. anecdotal notes, narratives or daily records, daily health checks, and teacher observation checklists.

What are the costs and benefits of leaving home after high school?

Cartels control the production and pricing of goods mainly through a) the elimination of competition. b) the cooperation of their members. c) the limitation of price controls. d) the manipulation of government pressure.