(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

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)

2. Relevant equations

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

3. 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.

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# Homework Help: Binomial distribution

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