Chapter 1: Q26BSC (page 1)
What’s Wrong? In Exercises 25–28, identify what is wrong.
Healthy Water In a USA Today online poll, 951 Internet users chose to respond, and 57% of them said that they prefer drinking bottled water instead of tap water.
The samples are collected through voluntary response sampling.
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Identify whether the given value is a statistic or a parameter.
Birth Weight In a study of 400 babies born at four different hospitals in New York State, it was found that the average (mean) weight at birth was 3152.0 grams.
What’s Wrong with This Picture? The Newport Chronicle ran a survey by asking readers to call in their response to this question: “Do you support the development of atomic weapons that could kill millions of innocent people?” It was reported that 20 readers responded and that 87% said “no,” while 13% said “yes.” Identify four major flaws in this survey.
Hospitals In a study of births in New York State, data were collected from four hospitals coded as follows: (1) Albany Medical Center; (1438) Bellevue Hospital Center; (66) Olean General Hospital; (413) Strong Memorial Hospital. Does it make sense to calculate the average (mean) of the numbers 1, 1438, 66, and 413?
Determine whether the given source has the potential to create bias in a statistical study.
Arsenic in Rice. Amounts of arsenic in samples of rice grown in Texas were measured by the Food and Drug Administration (FDA).
In Exercises 29–36, answer the given questions, which are related to percentages.
Percentages in Advertising Continental Airlines ran ads claiming that lost baggage is “an area where we’ve already improved 100% in the past six months.” What is wrong with this statement?
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