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December 18, 2014

December 18, 2014

Posted by **Elie** on Wednesday, March 16, 2011 at 2:53am.

a) the bias, if any, which is present in the sampling method

b)the true population average commute distance

c)simple random sample

d)the sampling distribution of the sample mean

I chose choice "d" but I was torn between that and choice "b"

2)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 of these residents is to be computed.

We know the random variable has approximately a normal distribution because of

Choose one answer.

a. the central limit theorem.

b. the law of large numbers.

c. the 68–95–99.7 rule.

d. the population we're sampling from has a Normal distribution.

I chose choice "a"

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