Question

To calculate: The probability that the selected student received an "A" in the course. Given Information: A table depicting the grade distribution for a college algebra class based on age and grade.

Upper level algebra
ANSWERED
asked 2021-02-09
To calculate: The probability that the selected student received an "A" in the course.
Given Information:
A table depicting the grade distribution for a college algebra class based on age and grade.

Answers (1)

2021-02-10
Formula used:
In a sample space, S, of equally likely, the probability of an event E is given by
\(\displaystyle{P}{\left({E}\right)}={\frac{{\nu{m}{b}{e}{r}\ {o}{f}\ {e}\le{m}{e}{n}{t}{s}\ \in\ {t}{h}{e}\ {e}{v}{e}{n}{t}}}{{\nu{m}{b}{e}{r}\ {o}{f}\ {e}\le{m}{e}{n}{t}{s}\ \in\ {t}{h}{e}\ {s}{a}\mp\le\ {s}{p}{a}{c}{e}}}}={\frac{{{n}{\left({E}\right)}}}{{{n}{\left({S}\right)}}}}\)
Calculation:
Denote the sample space as
\(\displaystyle{S}={1940}\)
Let R represent the event of selecting a student who received an "A" in the course, so
\(\displaystyle{R}={440}\)
\(\displaystyle{P}{\left({R}\right)}={\frac{{{n}{\left({R}\right)}}}{{{n}{\left({S}\right)}}}}={\frac{{{440}}}{{{1940}}}}={\frac{{{22}}}{{{97}}}}\)
Therefore, the probability that the selected student received an "A" in the course is \(\displaystyle{\frac{{{22}}}{{{97}}}}\).
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