Let’s just say the standard deviation of those 8,000 students is 5. 1) What is the...

Let’s just say the standard deviation of those 8,000 students is 5.

1) What is the formula for standard deviation of a population the 8,000 students (please make sure the summation sign has a starting and ending number)? Can it ever be negative? In our example, what are the units of the standard deviation?

2) What does the Central Limit Theorem say about the standard deviation of the curve?

3) What is the standard deviation in our example? 5

4) What is the probability that a randomly picked sample has a point estimate within .5 of the actual mean ??

5) What is the probability that a randomly picked sample has a point estimate within 1 of the actual mean ??

6) Do you know whether our point estimate is higher or lower than the mean?

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orchestra answered 1 year ago

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