Test 1
Parameter or Statistic
a. 18% of Governors of the 50 U.S. were female
d. Hygiene Habits a study of 6076 adults in public restrooms found 23% did not wash their hands before exiting
a. What is a parameter? (The U.S. Governors are a population)
d. What is a statistic? (out of 6076)
a measure of the likelihood of a random phenomenon or chance behavior occurring
What is probability?
Two events are ____ if they have no outcomes in common.
Two events E and F are ___ if the occurrence of event E in a probability experiment does not affect the probability of event F. Two events are ____ if the occurrence of event E in a probability experiment affects the probability of an event
What is Independent?
What is Dependent?
According to Chebyshev's Theorem, at least 84% of scores lie between ______ and ______.
What formula do we use to find these points?
WHat is (1-1/k2)100% ?
any collection of outcomes from a probability experiment. An ____ may consist of one outcome or more than one outcome
What is an event?
If E and F are disjoint (or mutually exclusive) events, then...
(hint: the formula)
What is P(EorF)=P(E∪F)=P(E)+P(F)
f E and F are independent events, then...
What is P(E∩F)=P(E)⋅P(F)?
Classify the variable as qualitative or quantitative, if applicable discrete or continuous, and level measurement of each variable.
e. phone number
b. grams of carbs in a doughnut
e. What is Qualitative and nominal?
b. What is quantitative, continuous, and ratio?
Consider the probability experiment of having 3 children
Find Event E=" having one boy"
What is E={(boy, girl, girl), (girl, boy, girl), (girl, girl, boy)}?
If Event E is having all girl children, what would EC be?
What is having no boys?
Suppose you draw a card from a standard 52-card deck of cards and then roll a die. The events “draw a heart” and “roll an even number”, independent or dependent?
What is independent?
Which are the frequency ogive and frequency polygon? Explain.
*Go to Google Doc
C. What is Frequency Polygon?
D. What is Frequency Ogive?
True or False?
If an event is impossible, the probability of the event is 0.
If an event is a certainty, the probability of the event is 1.
An unusual event is an event that has a low probability of occurring.
True. Rules of Probability
What is ∪?
How do we annotate "and"?
What is ∩?