Suppose a certain college has its own entrance exam, and scores on this exam follow a normal distribution with mean 150 and standard deviation 20 . Sue's standard score on this exam was 1.5 . What was her original score?
Q. 2Suppose a certain college has its own entrance exam, and scores on this exam follow a normal distribution with mean 150 and standard deviation 20 . Bob's score on this exam was 130 . What was Bob's percentile, and what does this mean in terms of how he compares to the rest of the population?
Q. 3Suppose a certain college has its own entrance exam, and scores on this exam follow a normal distribution with mean 150 and standard deviation 20 . Bob's score on this exam was 130 . What is Bob's standard score, and what does this mean in terms of where he stands in this population?
Q. 4Suppose you took a standardized test and the scores had a bell-shaped distribution. You only need three pieces of information in order to find your percentile in the population of test scores. What are those three pieces of information?
Q. 5Which of the following describes measurements that have a normal distribution?
a. The majority of the measurements are somewhere close to the average.
b. The farther away you move from the average, the fewer individuals will have those more extreme values for their measurements.
c. The mean of the measurements is located in the middle of the bell-shaped curve.
d. All of the above.
Q. 6Which of the following measurements likely has a normal distribution, at least approximately?
a. Weights of 10-year old boys.
b. IQ scores of 12 graders.
c. Nationwide scores on the SAT (Scholastic Achievement Test).
d. All of the above.
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