Blog

Assume that you have a binomial experiment with p = 0.4 and a sample size of 50. The variance of this distribution is _____.

Use Exhibit 1 to answer Questions 9 to 12: A survey of 400 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school.Undergraduate MajorGraduate SchoolBusinessEngineeringOtherTotalYes354263140No9110465260Total126146128400

Find the following probability: P(X > 1)

If P(A) = .50, P(B) = .60, and P(A and B) = .30, then events A and B are _____.

If P(A) = .38, P(B) = .83, and P(A and B) = .24; then P(A or B) =  

If A and B are independent events with P(A) = .4 and P(B) = .25, then P(A or B) = _____.

Use the following information for the Questions 14 and 15.The probability distribution of the number of cars owned by a family, is shown below   x0123   p(x)0.250.400.200.15  

Three applications for admission to a local university are checked to determine whether each applicant is male or female. The number of sample points in this experiment is _____.

What is the oxidation number of P in H3PO4?

For the following reaction, which reactant is being oxidized? 3H2(g) + N2(g) –> 2NH3(g)