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2 years ago

Consider the scatter plot.

Mathematics

2 answers:

Nataliya [291]2 years ago

6 0

Negative association

ANTONII [103]2 years ago

6 0

Hahahahaha you suck this is hoodie I don’t

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In a T-test, if your n=459, your DF is:<br><br> A. 459<br> B. 460<br> C. 458<br> D. A&C

Stels [109]

Answer:

DF = 458

Step-by-step explanation:

In statistics, T-test have an extensive application. T-tests are used in hypothesis testing or inference about the population mean when the population standard deviation is not known. Nevertheless, they are used in making inference in paired samples or dependent samples t-test as well as independent samples.

The degrees of freedom, DF, is a characteristic of the student's t distribution which is used in T-tests. In a simple T-test;

DF = n - 1

where n is the sample size

Given n is 459, DF = 459 - 1 = 458

Therefore, DF = 458

6 0

3 years ago

The phone company Ringular has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of mon

ivanzaharov [21]

Answer:

The slope is $0.35/min and it gives the cost per minute of the phone used.

Step-by-step explanation:

We can model this situation with a linear equation of the form

$y =mx+b$

where $y$ is monthly cost, $x$ is the number of minutes, $b$ is the flat monthly fee, and $m$ is the slope of the equation, or in our case, the amount of money charged per minute.

The slope $m$ is

$m= \dfrac{\$372.5-\$131}{990min-300min}$

$m = \$0.35/min$ ,

in other words, the phone company charges $0.5 per minute.

With the slope in hand, the linear equation becomes

$y =0.35x+b$ ,

and we can find the monthly fee $b$ from that fact that for 300 minutes the cost is $131:

$\$131 = 0.35(300min) +b$

$b = \%26$ .

Therefore,

$y = 0.35x+26$

where the slope if the equation give the cost per minute of the phone used.

4 0

3 years ago

Use the coordinates grid below to draw a square

garik1379 [7]

Answer:

draw a square using only 16 squares representing the area, so 8 by 8 by 8 by 8

6 0

2 years ago

James had t toy cars and Paul has 13 more how many cars will James have if Paul gives him half of his cars? ANSWER FAST I WILL G

kogti [31]

Answer:

James will end up with his original t cars and half of (t+13) cars, so will have ...

... t + (t+13/2) = (3t +13)/2 . . . . cars James has after Paul's gift

Step-by-step explanation:

5 0

2 years ago

A signal can be sent from one location to another by running different colored flags up a flagpole, one above the other. There a

Verdich [7]

Using the permutation formula, it is found that there are 17,297,280 different signals consisting of 8 flags.

In this problem, the order in which the flags are visited is important, hence the <em>permutation formula</em> is used to solve this question.

<h3>What is the permutation formula?</h3>

The number of possible permutations of x elements from a set of n elements is given by:

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

The first flag is blue, then the remaining 7 are taken from a set of 14, hence:

$P_{(14,7)} = \frac{14!}{7!} = 17,297,280$

There are 17,297,280 different signals consisting of 8 flags.

More can be learned about the permutation formula at brainly.com/question/25925367

8 0

2 years ago