NEW
Font size
WorksheetsBarron's AP Statistics
Total questions: 20
Worksheet time: 20mins
To test a claim about a mean, when the population standard deviation is unknown we use:
z procedures
Pythagorean Theorem
t procedures
np > 10 and n(1-p) > 10
Margin of error equals:
Critical Value ∗ standard Error
z*
1.96
Standard Error
When conducting a significance test for the difference in proportions, why do we pool the data when finding standard error?
Because we like to swim
Because we assume p1 = p2 in Ho
Because the sample sizes are always equal
To be safe and make sure we don't underestimate the standard error
Because we don't the standard deviation.
When creating a confidence interval for the difference of 2 proportions, we pool the samples when finding standard error
True
False
A
B
C
D
E
Is this a probability distribution?
No
Yes
Is this a probability distribution?
No, the sum of p(x) does not equal 1.
Yes, all p(x) are between 0 and 1.
No, all p(x) are not between 0 and 1.
Yes, the sum p(x) is 1.
What do we use to estimate unknown parameters?
Hypothesis Test
Confidence Interval
Trig Identity
Guess and check
When p-value is greater than alpha we:
Accept Ho
Accept Ha
Fail to reject Ho
Reject Ho
What's the appropriate interpretation of the slope of the regression line?
For every additional 0.61 hours of growth, the culture is predicted to weight 1 more gram.
For every additional hour of growth, the culture is predicted to weigh 0.61 more grams.
For every additional hour of growth, the logarithm of the culture's weight in grams is predicted to increase by 0.61.
At the beginning of the experiment, the logarithm of the culture's weight in grams was approximately 0.61 ounces.
