Question

Asked Apr 24, 2019

Step 1

Let X be the number of person who actually did vote.

The total number of people is 1467.

The voting record shows that 64% di vote.

That is the success event is voted and failure event is not voted.

*The assumptions for binomial distribution:*

- The number of trials is fixed.
- There are two outcomes success and failure with success probability p.
- Each of the trials will be independent.

Here, all the three assumptions are satisfied, therefore it can be said that X follows binomial distribution

with n = 1,467, p = 0.64.

Step 2

The pmf of binomial distribution is,

Step 3

**a.**

The probability that at least 980 actually di...

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