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dusya [7]
3 years ago
8

What are the mean and median of these numbers,7, 14, 15, 15, 14, 16, 11, 3

Mathematics
1 answer:
marissa [1.9K]3 years ago
8 0

Answer:

Mean: 11.875 or 11.9

Median: 14

Step-by-step explanation:

Mean = all numbers added up and then divided by the amount of numbers

Median = numbers ordered smallest to largest and then he middle number is your median, if there are two middle numbers then add those and divided by 2

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The angle being shown is an acute angle

Step-by-step explanation:

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3 years ago
If the point (-6,4) is dialated by a scale factor of 1/2, what would be the resulting point
oksian1 [2.3K]

It depend on the center of the dilation. For example, if the point (-6,4) is the center itself, than it will remain the same.

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3 years ago
The number of DVDs in a random person’s home collection is counted for a sample population of 80 people. The mean of the sample
VLD [36.1K]

Answer:

E = 3.46\ movies

Step-by-step explanation:

The formula to find the error is:

E = z_{\frac{\alpha}{2}}\frac{\sigma}{\sqrt{n}}

Where:

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n is the sample size

So

n = 80 people

\sigma = 12 movies

Then

1- \alpha = confidence level = 0.99

\alpha= 1-0.99

\alpha = 0.01\\\\\frac{\alpha}{2} = 0.005

We look for the Z value: Z_{0.005}

Z_{0.005}=2.58  Looking in the normal standard tables

Therefore:

E =2.58*\frac{12}{\sqrt{80}}\\\\E = 3.46\ movies

7 0
3 years ago
What is the sum of the probabilities of the favorable outcomes and the unfavorable outcomes, p(x=1)+p(x≠1)p(x=1)+p(x≠1)?
Drupady [299]

What's the sample space? Are we talking about rolling a die or what?


Anyway, if we call the probability p(x=1) = x, then p(x\neq 1) = 1-x


So, the expression becomes


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5 0
3 years ago
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