In a certain university, math SAT scores for the entering freshman class averaged 650 and had a standard deviation of 100. The maximum possible score is 800. Is it possible that the scores of these freshmen are normally distributed? Explain.

What will be an ideal response?


No. The maximum possible score of 800 is 1.5 standard deviations above the mean of 650. If the population were normal, about 7% of the scores would therefore be above 800. In fact, no scores are above 800. Therefore the population cannot be normal.

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What could cause a false high reading for the supply-air temperature?

A) If the temperature is taken with the blower on at the same time the heating elements are on. B) If the temperature is taken after the unit has been running for too long. C) If the probe is inserted in the supply plenum in a direct line of sight with the heating elements. D) If the temperature is taken with a probe inserted upside down.

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Change 12 3/4" to decimal feet.

Fill in the blank(s) with the appropriate word(s).

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In general terms, how does a switch work in a vehicle?

What will be an ideal response?

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