PierreSwag3788 PierreSwag3788

19-03-2020
Mathematics

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John and Mary are taking a mathematics course. The course has only three grades: A, B, and C. The probability that John gets a B is .3. The probability that Mary gets a B is .4. he probability that neither gets an A but at least one gets a B is .1. What is the probability that at least one gets a B but neither gets a C?

Respuesta :

chlomackthemonkey chlomackthemonkey

19-03-2020

Answer:

The sample space S can be arranged in a matrix form

S =

JAMA, JAMB, JAMC,

JBMA, JBMB, JBMC,

JCMA, JCMB, JCMC

Let E be the event that John gets a B

Step-by-step explanation:

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