Question

This probability distribution shows thetypical grade distribution for a Geometrycourse with 35 students.GradeAB.C D F15 3 2Frequency 510Find the probability that a student earns agrade of A, B, or C.p = [?]Enter a decimal rounded to the nearest hundredth.

Answer 1

We first need to find the total number of students in the sample, or the population.

We are given this in the question as 35 students.

Next, we need to find how many students earned an A, a B, and a C.

A - 5

B - 10

C - 15

Next, we will add these values up.

$5+10+15=30$

Finally, we will divide this value by our total population, 35 students.

$\frac{30}{35}=\frac{6}{7}=0.857$

Since we need to round to the nearest hundreth, we will round up to 0.86. Therefore, p = 0.86.