Rejecting the H0
This phrase is used to give a hint that you need to run an inference test?
Is there convincing evidence...?
This type of random variable requires a fixed number of trials, each observation to be independent, and to have two outcomes ("success" or "failure").
What is a binomial random variable?
This calculator command can be used to find the area under a normal distribution and above an interval.
What is normalcdf?
How to identify outliers for one variable data.
What is Q1 - 1.5(IQR) and Q3 + 1.5(IQR)?
A local TV news station has a daily poll that they ask their viewers. Every day at 5:00 PM they put up a QR code on the screen and anyone who is watching and would like to respond may do so and answer the question.
What is voluntary response bias?
Ms. Brown and Ms. Eastwood are observing the National mean scores for the AP Statistics exam is a 2.89. They want to know if the VR mean score on the AP Statistics exam is different than the national mean.
What is a 1-Sample T-Test for means
The type of significance test used for the mean of a single population when the standard deviation of the population is unknown.
What is a T test?
Events that have no outcomes in common and can never occur simultaneously, for which the addition rule is used.
What are disjoint events (or mutually exclusive events)?
This rule helps to determine if data is normally distributed by checking the number of observations within 1, 2, and 3 standard deviations away from the mean.
What is the Empirical Rule (68-95-99.7 Rule)?
Neither the subject nor those who measure the response variable know which treatment a subject received.
What is a double-blind experiment?
A survey was sent out on a new phone app to try to get information about all people in the United States. However, mainly younger Americans (aged 14-30) have this app on their phone. This is an example of ___.
What is nonresponse bias?
Mrs. Sullivan had bought a jumbo bag of skittles and is curious to see if his ratio of green, red, yellow, brown and blue skittles matches the ratio describes on the skittles website. He counts out the amount of each color he has and decides to run a ________ Test to see if it matches the historical ratio.
What is a Chi Squared Goodness of Fit Test
The three conditions needed for a z-test.
What are the random condition, 10% condition, and large counts condition?
The probability of rolling a fair die three times and getting three fours.
What is P(rolling three 4s) = P(4)*P(4)*P(4) = 1/216
This measure of center is more resistant to outliers than the mean.
What is the median?
The 3 basic principles of experimental design.
What are control, randomize, and replicate?
A television reporter wants to determine if Maryland residents would be interested in renovating Camden Yards, Baltimore's baseball field. The reporter asks baseball game attendees at Camden Yards if they support the idea.
What is convience sampling?
A hospital reported 5 c-section births out of 89 patients under the age of 38. The same hospital reported 9 c-section births out of 56 patients over the age of 38.
What is a 2 proportion Z Test?
The conclusion if the p-value of 0.001 given an alpha = 0.05.
What is "since the p-value is less than alpha = 0.05, we reject the null hypothesis, and conclude there is significant evidence to support the alternative hypothesis"?
The probability of pulling a red or a Queen from a standard deck of cards.
What is P(red or queen) = P(red) + P(queen) - P(red and queen) = 28/52
sigma
Standard Deviation (Sigma)
When some groups in the population are left out of the process of choosing a sample.
What is undercoverage bias?
A survey was sent out on a new phone app to try to get information about all people in the United States. However, mainly younger Americans (aged 14-30) have this app on their phone. This is an example of ___.
What is nonresponse bias?
Coach Leake wants to see if his training is leading to improvement in his sprinter. He has them all run a 100m at the beginning of the year and records their times. Then, after a full season of training, he has them run the 100m again in the same conditions (same track, same weather, etc.). He then records their new times. He runs a test to see if there is a statistically significant difference between their times at the beginning of the season, pre-training, and at the end of the season.
What is a Matched Pair T-Test
Write the conclusion for a 95% confidence interval (-4.25,-1.33) for the average drop in MP3 grades.
What is "We are 95% confident that the true drop of MP3 grades is between -4.25 and -1.33"?
Write in words how you would find the probability of a female given that they are an AP Stats student.
What is P(Female|AP Stats Student) = P(Female AP Stats Student)/P(AP Stats Student)?
You roll a dice and want to count the number of times you roll an even number and the number of times you roll and odd number. After 30 trials, you roll an even number 8 times and an odd number 22 times. The ___ Condition is NOT satisfied.
What is Large Counts (Normailty)?
What is cluster sampling?
What are people with alektorophobia afraid of?
Mr. Paulson has noticed that a couple of his students are taking AP Calculus BC at the same time as they are taking AP Statistics. He wonders if there is a correlation between taking BC Calculus at the same time and good performance on the AP Statistics tests. He separates students into 3 groups: Students taking AB Calc and Statistics, students taking BC Calc and statistics, and students only taking Statistics. Then he looks at how many students in each group have a grade of A or B, C or F and below. Based on the results of his test, he will be able to determine whether the proportion of students who perform well in the class differs between which/how many math courses they are taking.
What is Chi Squared Test for Independence