Statistics and Probability Answers

If A and B are two non-mutually exclusive events, then

Pr⁡A∪Pr⁡B is

Select one:

a. Pr⁡A+Pr⁡B+Pr⁡A∩Pr⁡(B)

b. Pr⁡A+Pr⁡B-Pr⁡A∩Pr⁡(B)

c. Pr⁡A-Pr⁡B-Pr⁡A∩Pr⁡(B)

d. Pr⁡A+Pr⁡B-Pr⁡A∩Pr⁡(B)

All the following are approaches to assigning probability to events except

Select one:

a. Empirical Approach

b. Subjective Approach

c. Classical Approach

d. Objective Approach

A card is drawn from an ordinary deck. Find the probability of getting a 3 or a diamond card.

________ is one of the results obtained when a statistical experiment is carried out.

Select one:

a. Event

b. Activity

c. Outcome

d. Experiment

If the occurrence of an event does not influence the occurrence of another event, the two events are said to be

Select one:

Mutually Inclusive

Dependent

Mutually Exclusive

Independent

Given event A, the set of outcomes in the sample space that are not listed in the event A is called

Select one:

a. Conditional Probability of A

b. Supplement of A

c. Complement of A

d. Composite of A

The division – wide aptitude test in Mathematics was conducted to students. The mean of the test is 58 and the standard deviation is 12. The scores also approximate the normal distribution. What percent of the scores is between 55 and 65? *

The division – wide aptitude test in Mathematics was conducted to students. The mean of the test is 58 and the standard deviation is 12. The scores also approximate the normal distribution. What percent of the scores is between 55 and 65? *

A group of students got the following scores in an achievement test: 9,12,15,18, 21, and 24. Consider samples of size 3 that can be drawn from this population. A. Determine and list all possible samples and the corresponding sample means. SAMPLE MEANS RANDOM SAMPLES​

A pair of dice is thrown. Find the probability that sum of the points on the two dice is 10 or greater if a 6

appears on the first die.