The final exam scores in a statistics class were as follows: 90, 70, 63, 98, 95, 32, 54, 89, 84, 80, 68, 71, 77, 71, 83 Find the
2 answers:
Answer:
75
Step-by-step explanation:
The mean [average] of a set of data is "the sum of all the numbers divided by the number of numbers".
<em>How many numbers are in the data set?</em>
<em>15</em>
<u>So we simply add all of them up and divide by sum by 15.</u> Doing so gives us the mean:
Mean =
The mean is 75
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So, what is the total lenght of the pieces that wer cut off?
we multiply the lenght by the number:
4
*5=20+
=21
and we subtract this from the original pipe, that is
30
-21
we need to bring the two fractions to the same denominator (by multiplying the fraction art in the first by 3 and 4 the second):
30
-21
=9 
so the correct answer is D!
we multiply the lenght by the number:
4
and we subtract this from the original pipe, that is
30
we need to bring the two fractions to the same denominator (by multiplying the fraction art in the first by 3 and 4 the second):
30
so the correct answer is D!