- #1

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## Homework Statement

I've uploaded a picture of the question.

I need help in identifying the correct number of trials, probability of success and the X value(number of successes)

## Homework Equations

i'm using the binomial distribution function on the calculator but i've attached the formula just in case

## The Attempt at a Solution

I used n=7, p=7/15 and X=7 which yields me a probability of 0.00482 which is incorrect. The correct answer is 0.000155 but not sure how.