THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 102

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
Of the 1400 colleges in the United States,370 have two-year schools and 1030 have four-year schools.In a random sample of 40 two-year schools,it was found that 10 of the schools do not have any faculty holding a Ph.D.degree.In an independent random sample of 60 four-year schools,it was found that only 6 of the schools do not have any faculty holding a Ph.D.degree.
-Find an estimate of the proportion of all the colleges that do not have any faculty holding a Ph.D.degree using an unbiased estimation procedure.

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Definitions:

Birth Spacing Interval

The period between consecutive births, affecting maternal and child health as well as population growth and family planning.

Hunters and Gatherers

Societies or groups that rely primarily on wild sources of food, obtained through hunting animals, fishing, and gathering plants, rather than agricultural cultivation.

Fertility Rates

The average number of children born to a woman over her lifetime within a specific population or country.

Food Foraging

The act of searching for and exploiting food resources, common in hunter-gatherer societies before the advent of agriculture.