A survey of students in a psychology class indicated that there were 119 females

A survey of students in a psychology class indicated that there were 119 females and 82 males. Of the 119 females, only 22 had no brothers or sisters, and 13 of the males were also the only child in the household. If a student is randomly selected from this class,
a. What is the probability of obtaining a male?
b. What is the probability of selecting a student who has at least one brother or
sister?
c. What is the probability of selecting a female who has no siblings?

2. Approximately 21,000 school psychologists are members of the National Association of School Psychologists. Of these, about 5000 have doctoral degrees. A researcher wanted to randomly select 100 of the doctoral-level school psychologists for a survey regarding aspects of their jobs, including job attitudes. Here is an excerpt from a random numbers table that you should use for the following questions:
04493 52494 75246 33824 45862 61962 00549 97654 64051 88159 63896 54692 35963 15307 26898 33351 35462 77974 59802 08391 51025 96119 09335 45427
a. What is the population targeted by this research study? How large is it?
b. What is the sample desired by the researcher? How large is it?
c. Describe how the researcher would select his/her sample. Be sure to explain how
the members of the population would be numbered and what sets of digits the
researcher should ignore when using the random numbers table above.
d. Beginning at the left-hand side of the top line and continuing with each succeeding
line (reading L to R), list the first 10 participants this researcher would select for the study.