Question

Please help. will give brainliest ​

Answer 1

Answer:

• B. The probability that the student received a grade better than C is 0.45

Step-by-step explanation:

Total number of students:

• 15 + 30 + 35 + 16 + 4 = 100

Statements

A.

• p(<D) = 4/100 = 0.04
• 0.04 ≠ 0.2
• Incorrect

B.

• p(>C) = (30 + 15)/100 = 45/100 = 0.45
• 0.45 = 0.45
• Correct

C.

• p(not A or B) = (100 - 15 - 30)/100 = 55/100 = 0.55
• 0.55 ≠ 0.45
• Incorrect

D.

• p(B or C) = (30 + 35)/100 = 65/100 = 0.65
• 0.65 ≠ 0.35
• Incorrect