Event A: a customer asks for help. Event B a customer makes a purchase. We know: p(B) = 0.2 and p(A) knowing that he has asked for help is 75%. What is the probability of a customer to ask for help and make a purchase?

If we right down all we have here we get:P(A) = X P(B) = 0.2 P(AIB) = 0.75 (P(A) knowing B). And we are looking for P(ANB). We have to use the formula of P(AIB) = P(ANB)/P(B). If we rearrange the equations, we get isolate P(ANB) = P(AIB) * P(B) which gives us what we a looking for.P(ANB) = 0.75 * 0.2 = 0.15

DA
Answered by Dan A. Maths tutor

2617 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

Use the substitution u=2+ln(t) to find the exact value of the antiderivative of 1/(t(2+ln(t))^2)dt between e and 1.


A curve has the equation y = (1/3)x^3 + 4x^2 + 12x +3. Find the coordinates of each turning point and determine their nature.


How would I differentiate something with the product rule?


Find the equation of the tangent line to the graph of y=2x^4-7x^3+x^2+3x when x=5


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences