Regular Probability
The probability a student takes AP Statistics and AP Environmental Science is .05. The probability a student takes AP Statistics is .18. What is the probability a student takes AP Environmental Science given that the student takes AP Statistics?
What is .2778
P(AP Environmental Science l AP Statistics) =
P(AP Environmental Science and AP Statistics) / P(AP Statistics)
Freshman GPAs at Dodgeland High School have a mean of 2.93 and standard devation of .39. What is the probability a student has a GPA of between 2 and 3?
What is .5627
A discrete random variable follows a ___ if it counts the number of trials needed to obtain the first success
Geometric distribution
A car comes in 3 different body styles and 5 different colors. How many possible options are there?
What is 15
The class average on a test was 78 with a standard deviation of 12 points. What is probability a student got 70% or less?
What is .2525
The ____ is all possible individuals that can be sampled
population
How many ways can I choose 8 papers to grade out of a class of 30 students?
What is 5852925
An average female is 5'4'' (64 inches). The standard deviation for average female heights is 2.5 inches. Madee is 5'6". What percentage of women are taller than her?
What is 21.19%
A sample is ___ (adj.) if the method used to create the sample consistently under-represents or favors certain groups in the population
Biased
If I am rolling two fair dice, what is the probability that the total value more than 6?
What is 0.583 or 21/36
The average person has 3.64 car collision claims in their lifetime with a standard deviation of 1.11. If Anna is in the bottom 20% of claims, how many claims has Anna had?
What is 2.71 accidents.
The ___ is used to find the probability of the union of two events
Addition rule
If you roll a fair dice, with sides labeled A, B, C, D, E and F. What is the probability that the dice lands on a vowel?
What is 1/3 or 0.333?
Most graduate schools of business require applicants for admission to take the Graduate Management Admission Council’s GMAT examination. Scores on the GMAT are roughly normally distributed with a mean of 527 and a standard deviation of 112. What is the probability of an individual scoring above 500 on the GMAT?
What is 0.5948?
___ ___is when a population is first divided into distinct groups (just like with stratified sampling)
Quota sampling