Select the option thatbestcompletes/answers the statement. (there may have 2 good answers but the best one)

1.A sample refers to

A.the number of individuals within a given category

B. the number of individuals in a group

C. a portion of a group about which data is being collected

D. the entire group about which data is being collected

2.If the value of a correlation coefficient is said to be 0.95, this would be considered a

A.weak positive correlation

B. strong negative correlation

C. weak negative correlation

D. strong positive correlation

3.A relationship where an external variable causes two variables to change and have a strong correlation is:

A. Presumed Relationship

B. Common Cause Relationship

C. Cause and Effect Relationship

D. Reverse Cause and Effect Relationship

4.Toyota would like to find out how satisfied its customers are with their Corollas. Which of the following is a possible population and sample of this study?

A. Population:All owners of CorollasSample:Corolla owners in 50 cities

B. Population:All CorollasSample:Corolla owners in Ontario

C. Population:All owners of ToyotasSample:Toyota owners in 50 cities

D. Population:All car ownersSample:Corolla owners

5.Taking a sample by selecting every nth member of a population (starting from a random starting point) is an example of:

A.Simple Random Sampling

B.Stratified Random Sampling

C.Systematic Random Sampling

D.Cluster Random Sampling

6.The average IQ is 100 and most people have an IQ between 90 and 110. Very few people have an IQ below 55 or above 145. The distribution of IQs is most likely

A. mound-shaped

B. uniform

C. U-shaped

D. skewed

7.If a z-score value of a data set is 1.35, what percentile does this correspond to?

A. 99th percentile

B. 9th percentile

C. 91st percentile

54th percentile

8.If sets A and B have no outcomes in common they are said to be

A.subsets

B.dependent

C.independent

D. mutually exclusive

E. not-mutually exclusive

Two dice are rolled. The probability of rolling a sum less than 5 is 0% 01 36 01 6 Q; 9 01 36 If P(A) = 0.3, P(A U B) = 0. 4 and P(A n B) = 0. 2, determine P(B). O0.1 Oo O 0.5 O 0.3