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Brut [27]
4 years ago
14

Normal distribution has a mean of 101 and a standard deviation of 10. find probability that value selected at random is at most

121
Mathematics
1 answer:
Alex_Xolod [135]4 years ago
4 0

A probability app or table will tell you the probability of Z ≤ 2 is 0.97725.

_____

Your value of 121 is 2 * 10 = 2 standard deviations above the mean of 101.

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ohaa [14]

Answer:

<em>if Petra uses a scale of 1 in = 50 miles, the distance of 400 miles would fit in the page.</em>

Step-by-step explanation:

<u>Scaling</u>

Objects can be represented in a reduced or augmented size by using scaling.

Scaling is essentially multiplying or dividing by a constant factor. We use scaling when representing geographic locations on a map.

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Dividing the real distance by the scale factor we get 400/20 = 20 inches. Petra would need 20 inches of paper to represent the scaled distance. That distance won't fit in any direction of the paper, so she actually cannot make the scale drawing.

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To make the drawing, the distance of 20 inches should fit into the page in any orientation, let's assume it's done across the paper's width of 8.5 inches.

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