Normal Distribution
These 2 values are needed to describe a normal distribution.
What are mean and standard deviation?
This is the probability that Emily will pick a face card from a standard deck of 52 cards.
What is 0.231?
This is the calculator function that gives the probability of a specific number of Bernoulli trials occurring before the first success.
What is geomPdf?
To find out the grade’s opinions on his field day T-shirt design, Kevin sends a survey in the grade Discord server as a server-wide announcement. Kevin’s sampling method suffers from this type of sampling bias.
What is voluntary response OR undercoverage?
This number is the minimum sample size for the shape of a sampling distribution to be considered normal by the Central Limit Theorem.
What is 30?
Ms. Kavanaugh has a 40% chance of giving a pop quiz and a 0.001% chance of giving a free period today. If she does give a pop quiz, then her students have an 80% chance of crashing out and no chance to get a free period. This term describes the relationship between the events pop quiz and free period, but not the relationship between pop quiz and crash-out.
What is mutually exclusive OR disjoint?
Desmond has a 40% chance of being late to school each day. This is the expected number of school days until he is on time for the first time?
What is 1.67?
When surveying customers’ preferred nail shapes, Owen decides to ask every 5th customer that comes into the nail salon, an example of this type of sampling.
What is systematic OR convenience?
The standard deviation of the sampling distribution of Owen’s gacha pull pity is decreased by this factor as the sample size is increased from 100 to 400.
What is 2?
James has a 30% chance of gaining 90 aura and a 70% chance of losing 30 aura when he does a cool flip. This is the expected value of such an action.
What is 6?
Daniel forgot to study for a 10-question bio test and decides to guess on every question. If each question has 4 answer choices, this is the probability that he will get exactly 3 correct.
What is 0.25?
Ishani wants to sample school-wide opinions on the new ReconX stickers. She asks every person that goes to ReconX meetings for a month. Ishani’s sampling method suffers from this type of sampling bias.
What is undercoverage?
A set of 100m free times at a competition are normally distributed with a mean of 59 seconds and a standard deviation of 3 seconds. James swims the 100m free in 53 seconds. This number is the proportion of swim times that are faster than James’s
What is 0.0228?
A test for senioritis is 95% accurate. If 60% of people have the disease, this is the probability that a person actually has it given that they tested positive.
What is 0.9661?
Abhijit has a 25% chance of winning the buzzer race on a history toss-up. This is the probability that his first points gained are on the 3rd history toss-up.
What is 0.1406?
There are 8 STEM electives at High Tech. Mrs. Brown randomly selects 2 to survey for research showcase presentations, an example of this type of sampling.
What is cluster?
Kevin’s Monday crossword solve times are normally distributed with mean 4:48 and standard deviation 2:00. Claire’s Monday crossword solve times are normally distributed with mean 6:34 and standard deviation 5:28. This is the probability that Claire solves a given Monday crossword faster than Kevin.
What is 0.3808?
Vishrut chooses to eat between 1 and 200 donuts and Geshan chooses to eat between 1 and 50 donuts. Assuming that each number of donuts has an equal chance to be chosen, this is the probability that Vishrut eats more donuts than Geshan.
What is 0.8725?
80% of High Techers are studying engineering or CS in college. In a random sample of 50 High Techers, let X be the number who are going into engineering or CS. These are the mean and standard deviation of X.
What are 40 and 2.828?
Derek asks the students at his lunch table about their ratings on his EDD project, an example of this type of sampling.
What is convenience?