Mathematics, 28.01.2020 04:31, bee8367
The average age of residents in a large residential retirement community is 69 years with standard deviation 5.8 years. a simple random sample of 100 residents is to be selected, and the sample mean age ¯ x x¯ of these residents is to be computed. we know the random variable ¯ x x¯ has approximately a normal distribution
a. of the central limit theorem.
b. of the 68‑95‑99.7 rule.
c. the population from which we’re sampling has a normal distribution.
d. of the law of large numbers.
Answers: 3
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