# Binomial distribution help?

I'm given a chart bellow and I'm asked to find:

What proportion of the values are less than 30?

And what is the exact probability that x will be less than 30?

How would I do this?

### 1 Answer

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- AlanLv 71 year agoFavorite Answer
Just read it directly out of the table

P(x<30) is different P(x<= 30)

P(x<30) means P(x<= 29)

P(x< 30) = (P(x<= 29) (does not include )

so just read for x = 29

P(x<30) = 0.43897

Note: If you are just supposed use the table

These two things are the same thing

What proportion of the values are less than 30?

0.43897 or if you want a fraction 43897/100000

And what is the exact probability that x will be less than 30?

0.43897

If you use excel function, you get 0.438965068.

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