The lifetimes of a particular brand of DVD player are normally distributed with a mean of eight
Question:
The lifetimes of a particular brand of DVD player are normally distributed with a mean of eight years and a standard deviation of six months. Find each of the following probabilities where x denotes the lifetime in years. In each case, sketch the probability.
a. P(7 ≤ x ≤ 9)
b. P(8.5 ≤ x ≤ 9.5)
c. P(6.5 ≤ x ≤ 7.5)
d. P(x ≥ 8)
e. P(x ≤ 7)
f. P(x ≥ 7)
g. P(x ≤ 10)
h. P(x > 10)
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Restate each probability in terms of z Then use the table to solve a P7 x 9 ...View the full answer
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Related Book For
Essentials Of Business Statistics
ISBN: 9780078020537
5th Edition
Authors: Bruce Bowerman, Richard Connell, Emily Murphree, Burdeane Or
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