Probability multiple choice questions

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Question 1 of 20

Two statements are given below. Select the statement for which a ratio of the measurements is meaningful. State “Neither” or “Both” if appropriate.

1 - Kasheta ran the race in 22.3 sec, and Louisa ran the same race in 26.4 sec.

2 - Juan gets out of school at 2:45 PM, and Aito gets out of school at 3:15 PM.

A. Kasheta ran the race in 22.3 sec, and Louisa ran the same race in 26.4 sec.
B. Neither
C. Both
D. Juan gets out of school at 2:45 PM, and Aito gets out of school at 3:15 PM.

Question 2 of 20

A poll was taken of a random sample of 1189 college students. Of these students, 789 reported that they had a drinking binge (more than 10 drinks in an evening) in the past month. Select the most believable conclusion.

A. About 66.358% of college students indulged in binge drinking last month.
B. Of the 23,456,321 college students in the country, 15,565,212 indulged in binge drinking last month.
C. About 65% of college students indulge in binge drinking.
D. About 65% of college students indulged in binge drinking in the past month.

Question 3 of 20 (correct)

5.0 Points

Which data provide the answer to the question: “How frequently can a student at Eureka College be expected to study more than three hours a day?”

A. Of 100 students surveyed, 43 reported that they study at least three hours a day twice a week.
B. Of 100 students surveyed, 43 reported that they have studied at least three hours a day.
C. Of 100 students surveyed, 43 reported that they studied at least three hours a day twice last week.
D. Of 100 students surveyed, 43 reported that they intend to study at least three hours a day next week.

Question 4 of 20 (correct)

5.0 Points

Humanities majors spend an average of $115 per course on books. Mathematics majors spend an average of $70 per course on books. What is the percent difference between the two amounts relative to the amount for mathematics majors (round to the nearest percent)?

A. 64%
B. 39%
C. 50%
D. 42%

Question 5 of 20

5.0 Points

Soft drink sizes: small, medium, large:

A. Qualitative, nominal
B. Quantitative, ordinal
C. Quantitative, ordinal, discrete
D. Qualitative, ordinal

Question 6 of 20

5.0 Points

Determine which of the four levels of measurement is most appropriate for the statement below.

Ages of survey respondents.

A. Ratio
B. Interval
C. Ordinal
D. Nominal

Question 7 of 20 (correct)

Convert 5.65 to a percent.

A. 565%

B. 5.65%

C. 0.565%

D. 56.5%

Question 8 of 20 (correct)

5.0 Points

The father of a junior high school student wants to determine the most popular book among junior high students. Select the sample with the least potential bias.

A. A randomly selected group of 10 book sellers

B. A randomly selected group of 30 junior high students

C. A randomly selected group of 30 junior high students leaving the public library

D.The group of 30 junior high students attending the birthday party of the researcher’s child

Question 9 of 20

5.0 Points

In a survey of 80 high school football players who committed to play in the Division III CCIW conference, 64 said that they would work out in their high school weight rooms in the summer before college. The margin of error for the survey was 6%. A census of all CCIW football players (not just freshmen) showed that 59% worked out at their high schools. One can conclude that:

A. the subjects were less than forthcoming in their responses to the survey.
B. the sample was not representative of the population.
C. there must have been an error in the determination of the margin of error.
D. the census results are consistent with the confidence interval of the study.

Question 10 of 20 (correct)

5.0 Points

A sample consists of every 49th student from a group of 496 students. Identify the type of sampling used.

A. Systematic
B. Cluster
C. Convenience
D. Random