1
Q
REVIEW: What is a population proportion?
A
The probability of success for a single trial in a binomial distribution
2
Q
What is the point estimate of P?
A
P HAT = x/n
Where n = # Successes in sample size n
3
Q
REVIEW: What conditions MUST be met for the approximation of the binomial?
A
Np > 5, Nq > 5
4
Q
REVIEW: What is a point estimate?
A
An estimate of a population parameter (usually derived from the sample)
5
Q
How do we build a confidence interval using P?
A
We use P HAT (the point estimate) plus/minus the error
6
Q
When asked to estimate sample size, what do you do if p or q are not given?
A
ASSUME p = 0.50 & q = 0.50
Probability and Statistics
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