Suppose you are looking at the population of 8,000 students that
are freshman at UTEP. 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 discussed in question 5) above?
- 3) What is the standard deviation in our example?
- 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?