When results from a scholastic assessment test are sent to test-takers, the percentiles associated with their scores are also given.
Suppose a test-taker scored at the 78th percentile for their verbal grade and at the 34th percentile for their quantitative grade. Interpret these results. A) This student performed better than 78 of the other test-takers in the verbal part and better than 34 in
the quantitative part.
B) This student performed better than 78 of the other test-takers in the verbal part and better than 66 in
the quantitative part.
C) This student performed better than 22 of the other test-takers in the verbal part and better than 66 in
the quantitative part.
D) This student performed better than 22 of the other test-takers in the verbal part and better than 34 in
the quantitative part.
Q. 2The probability that a house in an urban area will develop a leak is 6. If 87 houses are randomly selected, what is the probability that none of the houses will develop a leak?
A) 0.005 B) 0.060 C) 0.000 D) 0.001
Q. 3The mean age of professors at a university is greater than 51.2 years. If a hypothesis test is performed, how should you interpret a decision that rejects the null hypothesis?
A) There is sufficient evidence to support the claim > 51.2.
B) There is sufficient evidence to reject the claim > 51.2.
C) There is not sufficient evidence to reject the claim > 51.2.
D) There is not sufficient evidence to support the claim > 51.2.
Q. 4A pharmaceutical testing company wants to test a new cholesterol drug. The average cholesterol of the target population is 200 mg and they have a standard deviation of 25 mg. The company wished to test a sample of people who fall between 1.
5 and 3 z-scores above the mean. Into what range must a candidate's cholesterol level be in order for the candidate to be included in the study? A) 237.5 - 275 B) 225 - 237.5 C) 125 - 162.5 D) 162.5 - 275
Q. 5In a recent online survey, participants were asked to answer yes or no to the question Are you in favor of stricter gun control? 6571 responded yes while 3637 responded no. There was a fifty-cen
What sampling technique was used? A) convenience
B) simple random
C) cluster
D) stratified
E) systematic
Q. 6Fifty percent of the people that use the Internet order something online. Find the probability that only two of 10 Internet users will order something online.
A) 0.044 B) 0.200 C) 0.001 D) 11.250
Q. 7The mean age of professors at a university is 52.2 years. If a hypothesis test is performed, how should you interpret a decision that fails to reject the null hypothesis?
A) There is not sufficient evidence to reject the claim = 52.2.
B) There is sufficient evidence to reject the claim = 52.2.
C) There is sufficient evidence to support the claim = 52.2.
D) There is not sufficient evidence to support the claim = 52.2.
Q. 8A highly selective boarding school will only admit students who place at least 1.5 z-scores above the mean on a standardized test that has a mean of 110 and a standard deviation of 12.
What is the minimum score that an applicant must make on the test to be accepted? A) 128 B) 92 C) 122 D) 98
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