Question

The probability that a student graduating from a University has student loans to pay off after graduation is 0.80. If 4 students are randomly selected from this college, what is the probability that at least 3 of them have student loans to pay off after graduation?

Answer 1

Hello Sir/ Mam

YOUR REQUIRED ANSWER IS 81.92%

Given that, the student graduating has student loan 80% of the times.

Hence, it follows binomial distribution with:

p = 0.8

n = 4

x = 3

Using these values,

p	80.00%
n	4
x	3
x	P(x)
0	0.0016
1	0.0256
2	0.1536
3	0.4096
4	0.4096

Hence,

I hope this solves your doubt.

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