Probability of generating pounds between 27 and 31 per month = 62.47% Explanation: Z1 = (Higher range
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Question:
Probability of generating pounds between 27 and 31 per month = 62.47%
Explanation:
Z1 = (Higher range of pounds - Average pounds) / Standard deviation
= (31 - 28) / 2
= 1.5
Z2 = (Lower range of pounds - Average pounds) / Standard deviation
= (27 - 28) / 2
= -0.5
Probability = P(X < 31) - P(X < 27)
= P( Z < 1.5) - P(z < -0.5)
= 0.9332 - 0.3085
= 0.6247 or 62.47%
Note:
Using Z table following values are obtained:
Z value at 1.5 = 0.9332
Z value at (-0.5) = 0.3085
Related Book For
Elementary Statistics A Step By Step Approach
ISBN: 9781260360653
11th Edition
Authors: Allan Bluman
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