Permutations and Combinations
A' given:
S ={1, 2, 3, 4, 5, 6, 7, 8}
A = {1, 2, 3, 4}
What is 5, 6, 7, 8?
The sampling type of the following scenario:
To determine students’ satisfaction with the new cafeteria menu, Foods Services surveys students as they arrive in the cafeteria for lunch.
What is convenience sampling?
True or false? Correlation = causation.
What is false?
The probability of flipping a coin three times and getting tails each time.
What is 1/8?
The PDF for the uniform distribution 5<x<10
What is y = 1/5?
Simplify to factorial form:
(n+12)(n+11)(n+10)(n+9)!
What is (n+12)! ?
The sampling type of the following scenario:
To survey students in her classes, Ms. Williamson rolls a die to choose a starting point on his class list and then surveys every 5th student on the list.
What is systematic sampling?
The one-variable statistic that describes the number of individuals in the middle 50% of a sample.
What id the IQR?
The expected value of a circus game is 1.50 - is this a fair game?
What is no?
The percentile that correlates to the z score of 0.
What is 50th?
Determine the combination for the following scenario:
A team of 8 is being picked from 14 defense and 6 forwards trying out.
What is C(20,8)?
Describe (simple) sampling bias.
What is the sample is not representative of the population?
True or false? An linear coefficient (r) value of -0.59 means the line is going down to the right.
What is false?
The probability of winning the lottery and the probability of buying No Name brand eggs can be described as this type of event.
What is independent events?
P(x > 2) for the uniform distribution 0 < x < 4.
What is 0.5?
Determine the combination for the following scenario:
A team of 8 is being picked from 14 defense and 6 forwards trying out. The team should have 3 forwards.
What is C(6, 3) x C(14, 5)?
DAILY DOUBLE
What is the specific type of bias in this question?
"How satisfied are you with this amazing service?"
What is loaded measurement bias?
The relationship that best describes the following scenario:
Salary is positively correlated with job performance.
What is presumed relationship?
A probability distribution where the number of trials is unknown.
What is geometric?
The PDF for an average wait time of 7 minutes
What is y = (1/7)e(-1/7)x ?
The coefficient of the first term when (3x - 4y)3 is expanded.
What is 27?
The sampling type of the following scenario:
In order to survey students, the Vice-Principal divides the population by homeroom. She randomly selects a number of homerooms and surveys each student in those classrooms.
What is cluster sampling?
The relationship the best describes the following scenario:
An increase in monthly ice cream sales is strongly correlated with an increase in the number of sunburn cases reported.
What is common cause factor?
The names of the variables in a hypergeometric probability distribution.
n = population size
a = number of successes in the population
x = number of successes (in the trials)
r = the number of (dependent) trials
Ricky and Jimmy are competing in a hot dog eating contest, in the over 50 and under 50 categories.
Jimmy's time has a z-score of 1.45.
Ricky's time has a z-score of 1.35.
Who is the better hot dog eater?
What is Ricky?
But they're both not very good.