Statistics and Probability Answers

The number of grams of carbohydrates contained in a 1-ounce servings of randomly selected chocolates and non-chocolate candy is listed below. Is there sufficient evidence to conclude that the difference in the carbohydrates content is significant?

Chocolate

29 25 17 36 41 25 32 29 38 34 24 27 29 31 23 42

Non-chocolate

41 41 37 29 30 38 39 10 29 55 29 34 32 38 53 36

Consider an experiment of tossing an unbiased coin three times. What is the probability of obtaining four heads?

Select one:

a. 1

b. ½

c. 0

d. ¼

In which of the approaches to probability are personal conviction, belief and experience are employed to express probability of an event occurring?

Select one:

a. Subjective

b. Standard

c. Experimental

d. Relative frequency

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? *