Question

In a class with 40 students, 18 are boys, and 22 are girls. In the last exam, 2 boys and 2 girls achieved grade A. Calculate the probability of, in a random selection of two people, a boy or a student with grade A being selected. ? 3/4 ? 1/2 ? 4/40 ? 18/40 A B A\cap B

          In a class with 40 students, 18 are boys, and 22 are girls. In the last exam, 2 boys and 2 girls achieved grade A.
Calculate the probability of, in a random selection of two people, a boy or a student with grade A being
selected.
? 3/4
? 1/2
? 4/40
? 18/40
A
B
A\cap B

In a class with 40 students, 18 are boys, and 22 are girls. In the last exam, 2 boys and 2 girls achieved grade A.
Calculate the probability of, in a random selection of two people, a boy or a student with grade A being
selected.
? 3/4
? 1/2
? 4/40
? 18/40
A
B
A∩B

Added by F-Tima G.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Hoan Nguyen

03/18/2024

Step 1

Total number of students who achieved grade A = 2 boys + 2 girls = 4 students Show more…

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In a class with 40 students, 18 are boys, and 22 are girls. In the last exam, 2 boys and 2 girls achieved grade A. Calculate the probability of, in a random selection of two people, a boy or a student with grade A being selected. (3)/(4) (1)/(2) (4)/(40) (18)/(40) In a class with 40 students, 18 are boys, and 22 are girls. In the last exam, 2 boys and 2 girls achieved grade A Calculate the probability of, in a random selection of two people, a boy or a student with grade A being selected. A B AnB O3/4 O1/2 O4/40 O18/40