Name that Inference Procedure
Conditions
Probability
Sampling/Assignment
Miscellaneous
100
Rodney works at an aquarium. He is a part of the PR department and wants to find out how he can increase the satisfaction of the visitors. To do this Rodney will take a random sample of 40 visitors. He will get them to rate their satisfaction from 1 to 10, 1 being they hate it, 10 being the love it.
What is a one-sample t-interval for population mean?
100
M&M says that a full size bag of regular M&Ms contains 31.0 grams of sugar. Juan thinks that there is more. He will run a test to see if there is evidence that M&M is lying and there are more than 31.0 grams of sugar in a full size bag. He decides to take a random sample of 36 full size bags of M&Ms. Assuming Juan runs the proper inference procedure, what conditions has he met?
What is Random, 10%, and CLT.
100
Probability that a person either likes snowmobiles, or likes skateboards.
What is (150/160) = 93.75%
100
A study in which random assignment is not present.
What is an observational study?
100
Name that graph...
What is a stem plot
200
Billy wants to estimate how much higher the gpas of students in honors classes are than the gpas of students who do not take honors classes. To do this, he takes a random sample of 30 students in honors classes and 25 students not in honors classes.
What is a two sample t-test
200
When taking samples from a population we can treat results independent from one another as long as n < (1/10)N.
What is the 10% condition?
200
The probability that a fair coin is flipped 3 times and lands on heads each time.
What is .125?
200
This sampling method is always biased
What is convenience sampling?
200
This is the only time when you can use z calculations for population means.
What is when you know population standard deviation>
300
John wants to know if favorite ROYGBIV color has any impact on a students favorite class. John will take a random sample of 150 students at his high school and ask them what their favorite color is, and whether they prefer Math, English, Science, or History.
What is a Chi-square test for independence.
300
Tommy wants to estimate the true population proportion of students in his school of 2,000 people who play a sport. He takes a random sample of 20 students and finds that 90% of them play a sport. He wants to know what conditions are met
What is the 10% condition and randomness?
300
The probability that you will make your first free throw on your third attempt if your free throw percentage is 20%.
What is .1024?
300
This occurs when people are given the option of whether or not to respond.
What is nonresponse bias?
300
The r-coefficient of this graph
What is r=.8995? (.05 above or below will be accepted)
400
Tony is a soccer player. He wants to find if there is a relationship between a goalie's block rate and their score on an eye test. He takes a sample of 10 goalies in his league and has them complete an eye test and attempt to block 15 shots.
What is a linear regression t-test for slope?
400
Ameya wants to take a two sample t-test, but his data does not meet CLT. He wants to know what else he could do to check for normality.
What is make a plot of the sample data and check if the distribution is approximately normal?
400
Ramu has 12 apples. The mean weight of one of Ramu's apples is 2.3 lbs with standard deviation of .5. Ramu puts all 12 apples in a basket that weighs 1 lb. He wants to know the mean weight and standard deviation of the basket and apples together.
What is a mean of 28.6 lbs and standard deviation of 2.0438 lbs?
400
A specific type of blocking experiment
What is a matched pairs experiment?
400
The concept that samples of the same size from the same population will not always create the same statistics.
What is Sampling Variability?
500
Jim is the football coach at his local high school. Jim wants to know if his summer training camp for his athletes helps improve their strength. So Jim will have athletes bench press before the camp and after the camp to see if they have improved.
What is a matched pairs t-test for mean difference.
500
Brian is trying to estimate the proportion of people in his city who have blue collar jobs. Brian sets up a booth and he is required to sample absolutely everyone that comes to his booth no matter if they have already responded. He will get a total of 300 responses. He finds that 180 people said that they do work a blue collar job and 120 said they do not work a blue collar job. What condition(s) are not met?
The Random condition.
500
A production company makes kids toys. There is a 5% chance that a toy will not be produce correctly. Also the chance that a machine breaks is 7%. The probability that a toy is not produced correctly knowing the machine is broken is 0.5. If we randomly select a toy what is the probability that a toy is not produced correctly and the machine that produced it is broken.
P(Toy broken and Machine Broken) = 0.035
500
This sampling method involves randomly selecting an integer and then adding a set amount to that integer over and over again, until you have successfully attained the desired amount of data.
What is a systematic random sample?
500
The name of the measure of impactfulness introduced in 2025 AP Stats Exam Question 6
What is Cohen's d coefficient?