SOLUTION: Giving a test to a group of students, the grades and gender are summarized below
A B C Total
Male 2 9 11 22
Female 18 19 12 49
Total 20 28 23 71
If one student is chosen
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Probability-and-statistics
-> SOLUTION: Giving a test to a group of students, the grades and gender are summarized below
A B C Total
Male 2 9 11 22
Female 18 19 12 49
Total 20 28 23 71
If one student is chosen
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Question 1205000: Giving a test to a group of students, the grades and gender are summarized below
A B C Total
Male 2 9 11 22
Female 18 19 12 49
Total 20 28 23 71
If one student is chosen at random,
Find the probability that the student was female OR got an "B".
A B C Total
Male 2 9 11 22
Female 18 19 12 49
Total 20 28 23 71
If one student is chosen at random,
Find the probability that the student was female OR got an "B"
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To solve it by the simplest way, add the total females from the table (49) and
all males from the table under "B" (9), and relate it to the grand total 71.
Your answer is P = = = 0.8169 (rounded).
