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2 years ago

What is the quotient -3÷ 9

Mathematics

2 answers:

e-lub [12.9K]2 years ago

5 0

Answer:

Your answer is -0.3333333333333

-Seth

Readme [11.4K]2 years ago

5 0

The answer is -1/3.

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konstantin123 [22]

5/16

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3 years ago

Which graph represents the solution set of the system of inequalities?

lbvjy [14]

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2 years ago

In a recent test, you scored 1.0 standard deviations above the average score attained, and the scores are normally distributed.

sesenic [268]

Answer:

97.75 %

Step-by-step explanation:

You score 1 standard deviation above the mean

a) we have from left tail up to the mean 50 % of all values

b) We have in the interval [ μ - σ ; μ + σ ] 95.5 % of all possible values, if we divide that 95.5 by 2 we get 47.75 %, the part of the values that correspond to the right, then in order to get the % of students scored lower we add

50 + 47.75 = 97.75 %

So you can say that the porcentage of students that scored lower than you is 97.75 %

3 0

2 years ago

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Olenka [21]

They answer has to be c

7 0

3 years ago

On a test that has a normal distribution, a score of 49 falls two standard deviations below the mean, and a score of 61 falls on

Zolol [24]

The mean of this test will be 57.

<h3>What is Standard Deviation and Mean?</h3>

A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean.

The mean can be used to get an overall idea, or picture, of the data set.

Let Mean be 'm'

and standard deviation= $\sigma$

So, m-2 $\sigma$ =49

and, m + $\sigma$ =61

Solving the above two equation we get

$\sigma =4$

Now, m= 61- $\sigma$

= 61-4

= 57

So , the mean of this test will be =57

Learn more about mean and standard deviation here:

brainly.com/question/16030790

#SPJ1

6 0

1 year ago