The probability Mary will receive an A in a class is 0.51. Assuming independence

Question

1. The probability Mary will receive an A in a class is 0.51.
   Assuming independence, if she is taking 5 classes this semester, calculate the probability she will receive exactly 3 A's.
   (4 decimal places) YES, you need, therefore, to look at the 5th decimal place. Answer

1. The probability Mary will receive an A in a class is 0.51.
   Assuming independence, if she is taking 5 classes this semester, calculate the probability she will receive exactly 3 A's.
   (4 decimal places) YES, you need, therefore, to look at the 5th decimal place. Answer

The probability Mary will receive an A in a class is 0.51.
Assuming independence, if she is taking 5 classes this semester, calculate the probability she will receive exactly 3 A's.
(4 decimal places) YES, you need, therefore, to look at the 5th decimal place. Answer The probability Mary will receive an A in a class is 0.51.
Assuming independence, if she is taking 5 classes this semester, calculate the probability she will receive exactly 3 A's.
(4 decimal places) YES, you need, therefore, to look at the 5th decimal place.

Explanation / Answer

P(gets an A) = 0.51

marry can get 3'A in -------- 5C3 no of ways

as indepence of all the events is assumed

P(gets an A)*P(gets an A)*P(gets an A)*P(not gets an A)*P(not gets an A) is probalitity of the event .
total probability is

P(gets 3 As out of 5) = [5 C 3] (0.51)^3 (1 - 0.51)^(5-3) = 10 * 0.132651 * 0.2401 = 0.3185

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.