SOLUTION: in a random sample of 35 families what is the possibility that more than 15 families have income higher than 90 thousand dollars?

Question 986928: in a random sample of 35 families what is the possibility that more than 15 families have income higher than 90 thousand dollars?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

Since you didn't specify the population from which the sample was taken, nor did you provide that population's mean income and standard deviation, I get to select the population. Given the population of families that have an income less than $80,000, the probability that 15 of them have an income higher than $90,000 is zero.

John

My calculator said it, I believe it, that settles it

RELATED QUESTIONS
In a local town 36,000 families have incomes less than $30,000 per year. This number of (answered by ikleyn)

In a local town 36,000 families have incomes less than $30,000 per year. This number of... (answered by ikleyn)

In a sample of 500 families, 70 have a yearly income of less than $40,000, 220 have a... (answered by Boreal)

The average (as measured by the mean) number of children per family in the United States... (answered by ewatrrr)

i. In a sample of 500 families, 70 have a yearly income of less than $40,000, 220 have a... (answered by ikleyn)

. In a certain Caribbean country, the average monthly income per family is US$5,600... (answered by ewatrrr)

Studies show that 60% of US families use physical aggression to resolve conflict. Suppose (answered by ewatrrr)

U.S. Bureau of the Census data reveal the largest town in the State of OH has a... (answered by ewatrrr)

An association of insurance agents helps children from low-income homes at a primary... (answered by Theo)