if 6 surveyed are randomly selected without replacement for a follow up survey, find the probability that 3 of them said this
In a survey of 150 senior executives, 47% said that the most common job interview mistake is to have little or no knowledge of the company.
1 Answer | Add Yours
The sample size is 6 out of 150. This is 4% < 5%. Therefore we can assume this as a binomial distribution. Otherwise we cant use binomial theory for instances without replacements.
The probability of saying this as common mistake = 0.47
The probability density function of a binomial distribution is given by,
`P(k;n,P) = ^nC_kP^k(1-P)^(n-k)`
The probability that 3 people said it
Therefore there is a 30.91% chance that 3 people said it out of 6 randomly selected.
We’ve answered 288,498 questions. We can answer yours, too.Ask a question