The Central Limit Theorem for Sample Means (Averages) · Example 3
The length of time, in hours, it takes a group of people, 40 years old and older, to play one soccer match is normally distributed with a mean of 2 hours and a standard deviation of 0.5 hours. A sample of size n = 50 is drawn randomly from the population. Find the probability that the sample mean is between 1.8 hours and 2.3 hours.
OpenStax, Statistics · §7.1 The Central Limit Theorem for Sample Means (Averages) · Example 3
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