Search 84,491 tutors

In a school, the probability that a student takes environmental science and geography is 0.25. The probability that a student takes environmental science is 0.72. What is the probability that a student...

these numbers are circled.... 1,2,3,4,5,6   Assume that one circle is selected at random and each circle is equally likely to be selected. Determine the probability of selecting.   question:...

A certain genetic condition affects 5% of the population in a city of 10,000. Suppose there is a test for the condition that has an error rate of 1% (i.e., 1% false negatives and 1% false positives)...

Pr[A]=13 Pr[A1]=112 Pr[A2]=14 Pr[1|B]=12 Pr[2|B]=12 Pr[B1]=16 Pr[B2]=16 Pr[C1]=112 Pr[C2]=14 Find the following missing probabilities: (1) Pr[1|A]= (2)...

Of a group of children, 0.4 are boys and 0.6 are girls. Of the boys, 0.7 have brown eyes; of the girls, 0.4 have brown eyes. A child is selected at random from the group. (a) Find the probability...

In a second-semester English class, 40% of the students are sophomores and the rest freshmen; 25% of the sophomores are repeating the course and 15% of the freshmen gained admission to the course...