Question

giving a test to a group of students, the grades and gender are summarized below
grades and gender

	a	b	c	total
male	16	13	14	43
female	19	15	8	42
total	35	28	22	85

if one student is chosen at random, find the probability that the student did not get an \a\
probability = (round to 4 decimal places)

Explanation:

Step1: Find number of students who did not get A

The total number of students is 85, and the number of students who got A is 35. So the number of students who did not get A is $85 - 35=50$.

Step2: Calculate the probability

The probability $P$ of an event is the number of favorable outcomes divided by the total number of outcomes. Here, the favorable outcomes are students who did not get A, and the total number of outcomes is the total number of students. So $P=\frac{50}{85}\approx0.5882$.

Answer:

0.5882