the grade distribution of the many students in a geometry class is as follows.\n| grade | a | b | c | d | f…

the grade distribution of the many students in a geometry class is as follows.\n| grade | a | b | c | d | f |\n| frequency | 28 | 35 | 56 | 14 | 7 |\nfind the probability that a student earns a grade of d.\np(d) = ?

the grade distribution of the many students in a geometry class is as follows.\n| grade | a | b | c | d | f |\n| frequency | 28 | 35 | 56 | 14 | 7 |\nfind the probability that a student earns a grade of d.\np(d) = ?

Answer

Explanation:

Step1: Calculate total number of students

$28 + 35+56 + 14+7=140$

Step2: Calculate probability of grade D

$P(D)=\frac{\text{Frequency of D}}{\text{Total number of students}}=\frac{14}{140}=\frac{1}{10} = 0.1$

Answer:

$0.1$