Inference Procedure
The cafeteria estimates that it will take an average of 95 patrons per day in order to break even. The cafeteria was observed over 60 days to see if there would be an average of more than 95 patrons.
One Sample t test for Mean
Reject Ho, Ha is true
Power
The probability they land the bottle upright is 0.2. After the first ten flips, the student wants to do ten more, but his teacher is getting annoyed with all the noise and tells them they must stop flipping once the bottle lands right side up. Find the probability that they fail on the first nine tries and land it on the tenth try.
0.0268
A type of chart that shows the frequency distribution of data points across a continuous range of numerical values.
Histogram
What is the other stats teacher's last name?
Cannon
Are the majority of community college students in college in order to better their careers? 75 college students were surveyed.
One sample z test for p
Fail to reject Ha, but Ha true
Type II Error
The probability they land the bottle upright is 0.2. After the first ten flips, the student wants to do ten more, but his teacher is getting annoyed with all the noise and tells them they must stop flipping once the bottle lands right side up. Find the probability that they fail on the first try and land it on the second try.
0.16
A graph that visually groups the number of data points in a data set based on the value of each point
dot plot
What did Mrs. Hackett correctly predict to be the inference procedure on the AP Exam.
Two Sample z test for p1-p2
Do math students who spend time with a tutor earn a higher average than those who do not have a math tutor? 43 students who used a tutor and 72 students who did not use a tutor took part in the study.
Two Sample t test for Mean 1- Mean 2
Reject Ho, but Ho true
Type I Error
P(A | B)
= P(A∩B) / P(B)
A way of representing data using rectangular bars where the length of each bar is proportional to the value they represent
bar graph
What is the Stats textbook called?
The Practice of Statistics
Is the first-born puppy larger than the last-born puppy? 450 litters were investigated.
One sample paired t test for Mean difference
A teacher sends an email out attempting to collect data from her students. Students are allowed to not respond.
Voluntary response bias
If independent, P(A∩B)
= P(A) ⋅ P(B)
A type of graph representing data in a circular form, with each slice of the circle representing a fraction or proportionate part of the whole.
pie chart
How many shirts did the Parkinson's lady correctly identify?
11 out of 12
Does knowing which country a person's maternal grandmother was born help predict that person's political affiliation? 4000 people were asked what country their maternal grandmother was born in and what their political affiliation is.
X2 test for Independence
You are randomly calling landline numbers in order to conduct research on a town.
Undercoverage
What does P(A∪B) equal
= P(A) + P(B) – P(A∩B)
A special type of stacked bar chart that shows percentages of data in groups.
mosaic plot
What was the name of the woman who could smell Parkinson's disease?
Joy Milne