Proportion
Mean
Proportion
Mean
Both
100
What does C-Level stand for?
Confidence Interval
100
What is the symbol for mean?
100
What is the symbol for proportion in the parameter?
p
100
What is the critical value of a mean confidence interval?
z*
100
What are the 3 conditions for confidence intervals?
Random, Approximately Normal, and 10% Rule
200
How do you get to a 1-prop z interval in the calculator?
Stat > Test > #5
200
What is the critical value of a difference in mean confidence interval?
t*
200
What is the symbol for the critical value of proportion confidence intervals?
z*
200
What is the equation to solve for a mean confidence interval in the calculator?
Z-interval for Mean
T-Interval for Mean Difference and Difference in Mean
200
What is the name of the entire equation after plus or minus for a confidence interval?
Margin of Error
300
What is the equation on the calculator for difference in proportion?
2 - prop z interval
300
What can you use to find Approximately Normal if n isn't greater than 30?
A Normal Probability Plot (Approx. Normal if linear)
300
What are the 2 equations you use for Approximately Normal for proportion confidence intervals?
np > 10
n(1-p) > 10
300
What is the equation for Difference in Mean?
300
What happens if not all of the conditions are met?
Must proceed with caution
400
What is the equation to solve for proportions?
p-hat +/- z* square root p-hat(1-p-hat)/n
400
What is the standard error for a mean confidence interval?
Sx/n
400
What is the standard error for a proportion confidence interval?
square root phat times 1- phat divided by n
400
What is the equation for Mean Difference?
Sdiff/square root n
400
Will a confidence interval ever not have a confidence level?
No
500
Where can you find z*?
On the bottom row labeled infinity on Table B
500
What are the 3 symbols you use for the 3 types of mean confidence intervals?
mu, mu1-mu2, mud
500
What is the difference between p and p-hat?
p represents the population proportion (parameter)
p-hat represents the sample proportion (statistic)
500
What is different between mean difference and difference in mean?
Mean Difference: The average of the individual differences between paired observations (After - Before)
Difference in Mean: The difference between the average of Group A and the average of Group B (Mean A - Mean B)
500
List all of the different types of confidence intervals
Proportion
Mean
Difference in Proportions
Difference in Means
Mean Difference