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Arada [10]
3 years ago
9

50 POINTS FOR THIS QUESTION!!!

Mathematics
2 answers:
S_A_V [24]3 years ago
6 0
The answer is 4... i just had this.
Talja [164]3 years ago
3 0

Answer:

Step-by-step explanation:

Given is the graph bell shaped.

We have to find the variance of the data

We see that the graph looks like a normal distribution curve symmetrical about x=19

Hence mean =19

Since we know maximum area covered within 3 std deviations on either side of mean, we can calculate 6 sigma value from the graph

Extreme left x value = 14 and right = 24

Hence 6 times std dev =24-14 =10

So std deviation = 10/6 =5/3

Variance = 25/9

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4 years ago
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