Probability
What is the probability of the sample space?
What is... One
What rule determines if data is normally distributed by checking the amount of standard deviations away from the mean
68-95-99 rule
How to find IQR
What is Q3-Q1
When you have a 2PropZtest what conditions do you use?
Independence, Success/Failure, SRS
What is SRS?
What is when each unit has an equal chance and every set of units has an equal chance of being selected.
Given an event B what equation would you give you the response that event A will not occur?
What is.... P(A)=1-P(A)
The square of the Standard Deviation
What is the Variance?
What is Standard Deviation divided by the square root of N.
What are the 4 steps of a Hypothesis test?
What is...
Hypotheses, Model, Mechanics, and Conclusion
What is...
subtract two endpoints / 2
Given two events are mutually exclusive, for example A and B what is the probability that event A or B happens?
What is P(A or B)= P(A)+P(B)-P(A&B)
what type of trial tells us that the probability for a random variable that counts the number of successes in a fixed number of Bernoulli trials?
What is the Binomial Model
How to find the Expected Frequencies of a Matrix?
What is (sum of row)(sum of column)/(sample size).
How to find P-Pooled and Q-Pooled?
What is....
Ppooled= x1+ x2 / n1+n2
Qpooled=(n1-x1)+(n2-x2) / n1+n2
What are the four sources of Bias?
What is Voluntary response, convenience sampling, under coverage and non-response
What is the law of large numbers?
What is..... As an experiment is repeated the experimental probability gets closer and closer to the true probability.
A tennis player has a history of making her serves 45% of the time. What is the probability that she will make her first serve on her 5th try in a game?
.022
How to find the Z-Score
What is Subtract the mean of the distrubution from the observed X and divide by the standard deviation.
The amount of Evidence necessary before rejecting the null?
What is the Level of Significance.
What is a Type One Error?
What is rejecting Ho when Ho is actually true
What is.... 1-P(drawing a black spade)- P(drawing a club)
A dump pours a mean of 2.43 tons with a standard deviation of 0.88 tons of trash into a landfill each week. Calculate the 85th Percentile.
What is.... 3.34 tons
How to find the Standardized test statistic?
Statistic minus the parameter divided by the standard deviation of statistic.
Julia wants to know the average amount of goals she scored per game for her entire high school career. She averages the number of goals she has each game for all four years, then averages the four years. What is wrong with this?
What is....
Simson's Paradox is violated.
When the type one error increases, the type two error decrease, and the power increases what was increased in the equation?
What is the Alpha Value.