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AfilCa [17]
3 years ago
11

PLEASE HELP ME I DONT UNDERSTAND

Mathematics
1 answer:
drek231 [11]3 years ago
3 0

Answer:

\frac{v}{-9} < -18 or v ÷ -9 < -18

Step-by-step explanation:

"The quotient" means that it is a division problem. That means you have to divide.

Less than is a symbol that stands for *The number is less than the other number*

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A random sample of 10 subjects have weights with a standard deviation of kg. What is the variance of their​ weights? be sure to
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The variance of their​ weights is 128.87270 kg².

It is required to find the variance of their​ weights.

<h3>What is standard deviation ?</h3>

A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean. Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.

Given:

Let n=sample size=10 subjects

Standard deviation=11.352211.3522 kg

Using this formula

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By the formula we get,

Variance=(11.352211.3522 kg)²

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7 0
2 years ago
Suppose a jar contains 5 red marbles and 25 blue marbles. If you reach in the jar and pull out one marble at random, do not repl
dsp73

Answer:

Probability that event will have both red marbles will be 2.3% or 0.023.

Step-by-step explanation:

Given:

Total red marbles=5

Total blue marbles=25

Total number of marbles =30

To Find:

The probability that both are red without replacement of marbles.

Solution:

Now

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<em>Now for second chance there will be 4 red marbles remaining and 29 total marbles so,</em>

In second chance  probability if getting red marble will be

=total red marbles present/total marbles remaining

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Now ,

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i.e probability getting red AND red marble so here AND operator which means multiple both the probability.

Probability both will have red =1/6*4/29

=4/(29*6)=2/(29*3)

=0.022988

=0.023

=2.3 %

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