Question
The probability of getting a an A is 0.15 for a certain course.Find the following if 20 students are in the class? a. The mean
The probability of getting a an A is 0.15 for a certain course.Find the following if 20 students are in the class?
a. The mean
b. The standard deviation
c. At least 2 get an
A d. No less than 5 get an A
2)The battery life for a certain phone is normally distributed with a mean of 38 months and a standard deviation of 2 months.Answer the following?
A) If 12 batteries were tested and the average life was 36 months.Is there a problem with the batteries?
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An Introduction to Measure Theoretic Probability
Authors: George G. Roussas
2nd edition
128000422, 978-0128000427
