All categories

3 years ago

I really need this answer to be correct

Mathematics

1 answer:

Fed [463]3 years ago

4 0

It is unchanged because the same number would still be in the middle and there would still be the same amount of numbers

if
11,15,21,22,23,27,30 before 22 is the median

if
11,15,21,22,23,27,30 after 22 is still the median

The median is unchanged

You might be interested in

Please Hurry! Which two numbers on the number line have an absolute value of 2.75?

Kamila [148]

Use Photomath it helps

5 0

3 years ago

Read 2 more answers

A TV studio has brought in 8 boy kittens and 10 girl kittens for a cat food commercial.

kondor19780726 [428]

Answer:

0.323 = 32.3% probability that the director chooses 3 boy kittens and 5 girl kittens.

Step-by-step explanation:

The kittens are chosen without replacement, which means that the hypergeometric distribution is used to solve this question.

Hypergeometric distribution:

The probability of x sucesses is given by the following formula:

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

In which:

x is the number of sucesses.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

A TV studio has brought in 8 boy kittens and 10 girl kittens for a cat food commercial.

This means that $N = 8 + 10 = 18$

We want 3 boys, so $k = 8$

The director is going to choose 8 of these kittens at random to be in the commercial.

This means that $n = 8$

What is the probability that the director chooses 3 boy kittens and 5 girl kittens?

This is P(X = 3).

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

$P(X = 3) = h(3,18,8,8) = \frac{C_{8,3}*C_{10,5}}{C_{18,8}} = 0.323$

0.323 = 32.3% probability that the director chooses 3 boy kittens and 5 girl kittens.

3 0

3 years ago

Marissa deposited $900 in her savings account. The rate of simple interest is 5% per year. Find the balance at the end of 4 year

kotegsom [21]

If you multiply the 9 in the 900 by 5 you get 45 which is 5% of 900, multiply that by 4 gives 180 so she should have $180

4 0

2 years ago

Lin's father is paying for a $20 meal. He has a 15%-off for the meal. After the discount, a 7% sales tax is applied. What does L

MissTica

Answer:

18.19

Step-by-step explanation:

$20-15%=$17

$17+7%=18.19

6 0

3 years ago

What is the perimeter and area?

svp [43]

Answer:

Perimeter = 31.4in

Area = 78.5in^2

Step-by-step explanation:

Perimeter -

2 x 5 x 3.14 = 10 x 3.14 = 31.4in

Area -

5 x 5 x 3.14 = 25 x 3.14 = 78.5in^2

5 0

1 year ago