APFIVE Central Limit Theorem for a Skewed Population
A researcher is studying the lifetimes of electronic components. The population distribution is exponential with a mean of 5000 hours. The researcher takes random samples of size n = 25. Which of the following best describes the sampling distribution of the sample mean?
A
Approximately normal only if the sample is large
B
Not approximately normal since n < 30
C
Exactly exponential with mean 5000 hours
D
Approximately normal with mean 5000 hours
Question Leaderboard
Not enough data yet to show leaderboard.