18 juniors,,,,,,,10 seniors,,,,,(6 seniors are Female)(12 Juniors Male).....
Find the probability of a. A junior or a female?
b. A senior or a female?
c. A junior or a senior?
I suck at STATS.
i will do the first, try the other two, it's the same formulathere are 28 students in all.
so we want $\displaystyle P(J \text{ or } F)$
using our formula, we have:
$\displaystyle P(J \text{ or } F) = P(J) + P(F) - P(J \text{ and } F) = \frac {18}{28} + \frac {6 + 6}{28} - \frac {6}{28} = \frac 67$
have at themb. A senior or a female?
c. A junior or a senior?
this is probabilityI suck at STATS.