Displaying Data
Samples and Experiments
Basic Probability
Harder Probability
Sampling Distributions and Confidence Intervals
100
What is this shape?
Skewed Right
100
What is the term used to descibe an experiment when both the subject and experimenter do not know which group the subject is assigned too?
Double Blind
100
What is the probabilty of AC if P(A)=0.6
0.4
100
What is the P(full time student|Two to Three times)?
25/30=5/6=0.833
100
What is the point estimate for the interval (0.46, 0.88)
0.67
200
Given the numbers 122345556 what is the mode?
5
200
A survey was conducted in a local elementary school and every 5th child was selected from an alphabetical list after a random starting point was chosen. What type of survey was conducted?
Systematic Random
200
In a normal distribution, what is the probability of being within 1 standard deviation of the mean in both directions?
68%
200
The probability that a hockey player will score a goal is 1/5. Find the probability that the first shot she makes will be the 3rd shot taken.
4/5*4/5*1/5 = 0.128 = 16/125
200
What is the margin of error for the interval (17.84, 35.04)
8.6
300
Find the new mean and standard deviation if I multiply by 3 and subtract 2
mu=8 and sigma=4
mu=22 and sigma=12
300
Name the 3 components of experimental design
Random
Control/Compairsion Group
Replication
300
Find the expected value of the table below
-0.1
300
Name the 4 conditions for a distribution to be binomial (you must have all 4 for the points!)
Having 2 outcomes
Independent trials
Fixed N
Probability does not change
300
According to the FDA the average calories consummed by teenage boys a day is approximately normal with a mean of 3500 and a standard deviation of 300. In a sample of 100 boys, find the mean and standard devation of the sampling ditsribution.
mu =3500 and sigma = 30
400
If the mean of a distribution is 8, the median is 9 and the mode is 10, what shape does the distribution have?
skewed left
400
An experiement was conducted where 1000 fish were randomy placed into 10 tanks. Each tank was then randomly assigned to recieve a vitamin supplement or not to see how the fish would thrive. What are the experimental units?
10 tanks
400
What is the probability you failed chemistry given you failed physics?
19/26 OR 76%
400
Name the two rules to prove independence. (you need both for the points)
P(A)*P(B)=P(A and B) OR
P(A|B)=P(A)
400
The matched pairs confidence interval for the average difference in heights of fathers - sons was found to be (-5.21, -0.52). Is there a significant difference and if so, which group (fathers or sons) is taller?
Yes, since the interval is negative, it implies sons are taller.
500
What are the two formulas to find outliers?
Q1-1.5(Q3-Q1)
Q3+1.5(Q3-Q1)
500
Name the 3 types of exerpimental Designs
Completely Random
Blocked
Matched Pairs
500
In a standard deck of cards, what is the probability of drawing 3 hearts without replacement? (simplification is NOT required)
13/52*12/51*11*50 =11/850 = 0.0129
500
If simgax =3 amd sigmay =4, what is sigmax+y?
5
500
Using appropriate symbols label the following parameter and statistic.
The WWF claims that 50% of koala have Chlamydia. In a study conducted by the National zoological foundation, it was found in a sample of 100 random koalas that 45% had Chlamydia.
p=0.50 OR 50%
p-hat =0.45 or 45%