exercise:A50f963ebc: Difference between revisions
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(Created page with "<div class="d-none"><math> \newcommand{\NA}{{\rm NA}} \newcommand{\mat}[1]{{\bf#1}} \newcommand{\exref}[1]{\ref{##1}} \newcommand{\secstoprocess}{\all} \newcommand{\NA}{{\rm NA}} \newcommand{\mathds}{\mathbb}</math></div> 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. The probability that neither gets an A but at least one gets a B...") |
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John and Mary are taking a mathematics course. The course has only | |||
course has only | |||
three grades: A, B, and C. The probability that John gets a B is .3. The | three grades: A, B, and C. The probability that John gets a B is .3. The | ||
probability that Mary gets a B is .4. The probability that neither gets an A | probability that Mary gets a B is .4. The probability that neither gets an A | ||
but at least one gets a B is .1. What is the probability that at least one | 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? | gets a B but neither gets a C? | ||
Latest revision as of 21:00, 12 June 2024
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. The 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?