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chapter 1 #15 Bicycle safety- Ian Walker, a psychologist at the University of Bath, wondered whether drivers treat bicycle riders differently when they wear helmets. He rigged his bicycle with an ultrasonic sensor that could measure how close each car was that passed him. He then rode on alternating days with and without a helmet. Out of 2500 cars passing him, he found that when he wore his helmet, motorists passed 3.35 inches closer to him, on average, than when his head was bare. (Source: ...

A table or listing that shows values and how many times each value occurs is: - ansFrequency distribution What is the simplest, most fundamental level of measurement? - ansNominal Students are given grades of A, B, C, D, or F on their homework assignments. The use of letter grades would be an example of what level of measurement? - ansOrdinal The scale of measurement that assumes there is an underlying scale of equal units, but without an absolute zero point, is the ______ scal...

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A fast food restaurant just leased a new freezer and food fryer for three years. The service contract for the freezer offers unlimited repairs for a fee of $125 a year plus a $35 service charge for each repair needed. The restaurant's research indicates that during a given year 80% of these freezers need no repairs, 11% needed to be serviced once, 5% twice, 4% three times, and none required more than three repairs. The mean restaurant's annual expense with the service contract for th...

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