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marissa [1.9K]
3 years ago
14

The graph shows a distribution of data with a standard deviation of 6.

Mathematics
2 answers:
MrRissso [65]3 years ago
4 0

The mean of the standard normal graph shown is the middle point about which the graph is symmetric.

Hence, mean is 75.

Also, given that standard deviation is 6.


<u><em>What is 1 standard deviation from the "mean" mean?</em></u>

<em>75+6=81</em><em> and  </em><em>75-6=69</em>

<em>So a value within 69 and 81 would be called within 1 standard deviation of the mean.</em>


So, calculating 2 standard deviation from the mean as:

75+6+6=87 and 75-6-6=63

So a value within 63 and 87 would be called within 2 standard deviation of the mean.

84 falls in this category, so we can say answer choice B is correct.


ANSWER: B

Agata [3.3K]3 years ago
3 0
B. It is within 2 standard deviations of the mean.
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