Nine questions, three hours
Print all tables (z, t, F, and chisquare)
1.
Calculating confidence intervals using Z and "t" statistics for
proportions and populations (
M3)
ALWAYS FIRST CHECK IF N IS >= 30. IF IT IS, DO THE Z TEST,
OTHERWISE START DOING THE T TEST.

Use critical t when:
o
We have the
sample
mean and sample standard deviation (s)
o
If n < 30
o
We do not know the population variance
o
Read the table: df = n1

Use z test when:
o
We are told the
population
standard deviation (sigma)
o
If n >= 30
o
Use z test for proportion
For binomial, once you know the mean, you know
the standard deviation

Population test:
1.
Use the given formula
Z value: use the table
2.
Similar concept for ttest

Proportion test:
1.
Use the given formula

If given error (x mu), alpha level, and sigma, then you can find the
sample size n