vocab
H0 is...
What is null hypothesis?
First condition you check for
What is random?
Invnorm finds...
What is Z score?
If pval< a...
What is reject null hypothesis
As sample size increases, ME ____
What is decreases?
P is.....
what is true prop of _____?
What is independence condition?
What is n less than or equal to .1N
Normcdf finds...
What is probability of a variable being in that range?
If we have a p-value of .062 and alpha = .05, we _____ null.
What is fail to reject?
As confidence interval increases, ME _____
What is increases?
P1-P2 is......
What is diff in proportions of ____ and ____?
This finds normality for one sample intervals and tests...
What is nphat less than or equal to 10
n(1-phat) less than or equal to 10
What does a 1 prop z int find
What is the confidence interval for a proportion at a certain confidence level?
What is the sentence stem for interpreting confidence intervals?
What is we are ____% confident that the ____ of _____ is between ____(units)?
Increasing sample size will decrease your _____
What is p-value?
What is z*?
What is critical value?
This formula is used to find the combined probability...
What is (X1+X2)/(n1+n2)
What does a 2 prop z test compare?
What is proportions of two independent groups?
What is sentence stem for interpreting a confidence level?
What is in many trials of size ___, if we calculate a confidence interval for each, we would expect ____% of them to contain the true ___of___?
What is a type 1 error?
What is null hypothesis is rejected when we shouldn't have?
What is p^c?
What is phat combined?
This finds normality for two proportion tests...
What is n1pcombined less than or equal to 10
n1(1-pcombined) less than or equal to 10
n2pcombined less than or equal to 10
n2(1-pcombined) less than or equal to 10
What does a 2 prop z int find
Confidence interval for difference in proportions
Scientists constructed a 95% confidence interval for blood pressure of 25 volunteers and found it to be (80,120)mmHg. Interpret confidence level.
What is in many trials of 25 volunteers, if we were to create a confidence interval for each, we would expect 95% of them to contain the true mean blood pressure?
(s)/(sqrt of n) is what formula?
What is Standard Error?