In a normal distribution, what is the probability that a randomly selected data value will fall within two standard deviations o f the mean? Give your answer as a whole number percent.
1 answer:
The answer is 95% This is something you should memorize. Specifically it is from the Empirical Rule (or 68-95-99.7 rule) which gives rough approximations of areas under the curve.
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Answer:
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Step-by-step explanation:
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y=66 z=180-74=106 x=60
Step-by-step explanation:
The "distance formula" an extension of the Pythagorean Theorem is: d^2=(x2-x1)^2+(y2-y1)^2 in this case: d^2=(-8-7)^2+(-9--1)^2 d^2=(-15)^2+(-8)^2 d^2=15^2+8^2 d=√(15^2+8^2) So the answer is 15^2+8^2