2. Which statement is not true in the equation

Mathematics

1 answer:

Oduvanchick [21]3 years ago

7 0

Answer:

Step-by-step explanation:

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There are 318 fiction books in the class library. Tha number of non fiction book is 47 less than double the number of fictions b

vivado [14]

Salutations!

There are 318 fiction books in the class library. The number of non fiction book is 47 less than double the number of fictions book. About how many non fiction books are there in the class library?

Let the number of non fiction books me 'NF'.

Let 'F' be fiction

Double means '2', therefore:

2F - 47 = non fiction (NF)

2(318) - 47 = non fiction

As you can see brackets indicate multiplication, therefore you will be multiplying 318 and 2

636 - 47 = non fiction (NF)

Subtract 47 from 636

589 = nonfiction (NF)

There are 589 non fiction books in the library.

Hope I helped (:

Have a great day!

4 0

4 years ago

Left-handedness occurs in about 12% of all Americans. Males are slightly more likely than females to be left-handed, with 13% of

FinnZ [79.3K]

Answer:

a)Both X and Y can be well approximated by normal random variables.

Step-by-step explanation:

For each individual, there are only two possible outcomes. Either they are right-handed, or they are left-handed. This means that we can solve this problem using concepts of the binomial probability distribution.

Binomial probability:

Probability of exactly x sucesses on n repeated trials, with probability p.

The binomial probability can be well approximated by normal random variables, using the expected value $E(X) = np$ and the standard deviation $\sigma = \sqrt{np(1-p)}$