Question

The probability that an individual is left handed is 0.12, there are 39 students in the class.?

what is the probability of finding
a) 6 left handers
b) fewer than 6 left handers
c) 26 right handers
d) all 39 right handers
how do I do this on the calculator??

Answer 1

I think the answer is `b)`

Explanation:

`0.12` probabilty means `12` students are left handers among `100` students.
In this problem, there are `39` students. So, the ratio is like this:
`12:100=x:39`
From this equation, `x` is `4.68~~5`
It implies that left hander students can be less than 6.

`P.S.` It is my opinion. It can be good that someone else controls.