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 sigma=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%