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3 years ago

Explain the t , ratio ?

2 answers:

7 0

The t-value is a ratio of the difference between the mean of the two sample sets and the variation that exists within the sample sets. ... Higher values of the t-value, also called t-score, indicate that a large difference exists between the two sample sets.

<h2>~ Cutest Ghost</h2>

sweet-ann [11.9K]3 years ago

3 0

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Can you help me find the composition of funtions

balandron [24]

where's the question? x

6 0

3 years ago

The variance calculated on 34 scores is equal to 14.94. what is the standard deviation?

ElenaW [278]

Since, the variance calculated on 34 scores is equal to 14.94.

We have to determine the standard deviation.

Relationship between Variance and standard deviation is:

Standard deviation = $\sqrt(Variance)$

Substituting the value of Variance, to evaluate the standard deviation.

We get,

Standard deviation = $\sqrt(14.94)$

= 3.865

= 3.87

Therefore, the standard deviation is 3.87

4 0

3 years ago

Write the following sum using summation notation -2/5+3/6-4/7........11/14

horrorfan [7]

Answer:

$\sum_{n=1}^{10}(-1)^n\left ( \frac{n+1}{n+4} \right )$

Step-by-step explanation:

Given: $\frac{-2}{5}+\frac{3}{6}-\frac{4}{7}+...+\frac{11}{14}$

To write: the given expression using summation notation

Solution:

Summation notation helps to write a long sum as a single expression.

In the summation notation, the variable $\sum$ is called the index of summation.

Let $x_1,x_2,x_3,...,x_n$ denote a set of n numbers.

Then in summation notation,

$x_1+x_2+x_3+...+x_n=\sum_{i=1}^{n}x_i$

$\frac{-2}{5}=(-1)^1\left ( \frac{1+1}{1+4} \right )\\\frac{3}{6}=(-1)^2\left ( \frac{2+1}{2+4} \right )\\\frac{-4}{7}=(-1)^3\left ( \frac{3+1}{3+4} \right )\\.\\.\\.\\\frac{11}{14}=(-1)^10\left ( \frac{10+1}{10+4} \right )\\\therefore \frac{-2}{5}+\frac{3}{6}-\frac{4}{7}+...+\frac{11}{14}=\sum_{n=1}^{10}(-1)^n\left ( \frac{n+1}{n+4} \right )$

3 0

3 years ago

Help me pls? with math!!!

rewona [7]

Answer:

pick number 3

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

If mEAF=2x+4 and mGAF=x+11,then solve for the value of x algebraically use this value of x to find mEAF

jonny [76]

Vertical angles are angles that meet at the point. The angles EAF measures 18 degrees

<h3>What are Vertical angles?</h3>

Vertical angles are angles that meet at the point where two lines intersects and facing each other.

These angles are always equal to each other. Given the vertical angles shown below:

mEAF=2x+4 and;

mGAF=x+11

Equate both expressions to have:

2x + 4 = x + 11

Collect the like terms

2x-x = 11 - 4

x = 7

Determine the measure of m<EAF

m<EAF = 2x + 4

m<EAF = 2(7) + 4

m<EAF = 18 degrees

Hence the measure of angles EAF is 18 degrees

Learn more on vertical angles here: brainly.com/question/5634303

#SPJ1

5 0

1 year ago

Explain the t , ratio ?​

Explain the t , ratio ?