Question
Long-distance telephone calls are normally distributed with a mean of 8 minutes and a standard deviation of 2 minutes. If random samples of 25 calls
Long-distance telephone calls are normally distributed with a mean of 8 minutes and a standard deviation of 2 minutes.
- If random samples of 25 calls were selected, what is the probability that telephone calls would be between 7.83 and 8.2 minutes?
- If random samples of 25 calls were selected, what is the probability that telephone calls would be at most 8.2 minutes?
3. If random samples 100 calls were selected, what is the probability that telephone calls would be between 8.35 and 8.42 minutes?
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A Short Course In Automorphic Functions
Authors: Joseph Lehner
1st Edition
0486799921, 9780486799926
