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3 years ago

What is the median of 4, 6, 9, 11, 8, 13, 12

2 answers:

5 0

Write the numbers in order first,
4, 6, 8, 9, 11, 12, 13
Middle number in sequence is the median, in this case median is 9.

MrMuchimi3 years ago

5 0

1.) Put the numbers in order from Least to Greatest
4,6,8,9,11,12,13

2.) Take away the number that are for sure not the median.
4,6,8,9,11,12,13
6,8,9,11,12
8,9,11
9

3.) The median is 9

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Help I be trying so but can figure out the answer

Sphinxa [80]

Answer:

Step-by-step explanation:

Surface of the earth =3959×3.14

=12,437.565

if 20%is suitable so we multiply it by the surface

12,437.565×0.2=2,487.513 per people

2,487.513/7,700,00,00

So I think it will be the closest to b

4 0

3 years ago

Read 2 more answers

If f(x)=3x^2+2 and g(x)=x^2-9 find (f-g)(x)

miss Akunina [59]

Here given, $f(x) = 3x^2+2$ and $g(x) = x^2-9$

we have to find $(f-g)(x)$ which means the subtracting of the functions f(x) and g(x).

$(f-g)(x) = f(x) - g(x)$

= $(3x^2+2) - (x^2-9)$

= $3x^2+2 -x^2-(-9)$

= $3x^2-x^2+2+9$ ( we know that multiplication of negative and negative is positive)

= $2x^2+2+9$

= $2x^2+11$

We have got the required answer here.

$(f-g)(x) = 2x^2+11$

6 0

3 years ago

Read 2 more answers

2. When a large truckload of mangoes arrives at a packing plant, a random sample of 150 is selected and examined for

kirza4 [7]

a) The 90% confidence interval of the percentage of all mangoes on the truck that fail to meet the standards is: (7.55%, 12.45%).

b) The margin of error is: 2.45%.

c) The 90% confidence is the level of confidence that the true population percentage is in the interval.

d) The needed sample size is: 271.

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions has the bounds given by the rule presented as follows:

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

The margin of error is given by:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

The variables are listed as follows:

$\pi$ is the sample proportion, which is also the estimate of the parameter.

z is the critical value.

n is the sample size.

The confidence level is of 90%, hence the critical value z is the value of Z that has a p-value of $\frac{1+0.90}{2} = 0.95$ , so the critical value is z = 1.645.