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musickatia [10]
4 years ago
7

Someone help me please

Mathematics
1 answer:
aleksklad [387]4 years ago
8 0
68% of the time, values will be within ONE std dev of the mean.
Thus, if the mean is 50 and the std. dev is 5, values will be between 45 and 55.
45 is one std dev below the mean, whereas 55 is one std dev above.

40 and 60 represent 2 std dev below the mean and above the mean, respectively.  95% of the time, values will be within the interval (40,60).

Here we're making use of the so called EMPIRICAL RULE.

99.9% of the time, values will lie within 3 std dev of the mean.  This comes out to (45, 65).  Unsure of how to conclude the 3rd question here.

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3 0
3 years ago
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An arrangement of marbles has 12 marbles in the first row and 10 rows in all. In each successive row one marble is added.
noname [10]
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6 0
3 years ago
Mrs. Amy has 5 bunches of grapes, which she is serving as a snack to a group of children. Each serving is 1/4
omeli [17]

We will see that 20 children can get a serving.

<h3>How to divide fractions?</h3>

To see how many children can get a serving we need to take the quotient between the total amount of grapes and the amount of grapes needed for each serving.

We know that there are 5 bunches of grapes, and each serving needs 1/4 bunches, then we need to solve:

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Notice that we can write 5 as a fraction:

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then:

\frac{5/1}{1/4}

Now, the two numbers in the middle (both ones) remain on the denominator, while the other 2 conform the numerator, then we have:

\frac{5/1}{1/4} = \frac{5*4}{1*1} = 20

So 20 children can get a serving.

If you want to learn more about fractions, you can read:

brainly.com/question/11562149

7 0
3 years ago
I have to give a name, values, and a level of measurement for these:
meriva
No. of years:  I have lived for 73 years.  (Value:  # of years)

Phase of life:  At 73, I'm in my late middle age.  Early childhood was a long, long time ago, as was adolescence.  And so on.
 
Amt. of money I have is confidential.  ;)    Well above mininum wage!

Type of psychological functioning:  healthy, constructive (as opposed to schizophrenic, illusions of grandeur, etc.)

Religious training:  essentially Protestant.  There is some numerical fraction implicit in "essentially."

Abstract reasoning ability:  Well above average ability in this department.

These are possible answers.  Take them with a grain of salt.
8 0
4 years ago
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How can I write3 4/5 as a fraction
mr Goodwill [35]

Answer:

19/5

Step-by-step explanation:

You have to multiply the whole number with the denominator and then add the numerator to get the improper fraction.

8 0
4 years ago
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