Consumer Reports conducted a survey of 1000 adults concerning wearing bicycle helmets. One of the questions presented to 25- to 54-year olds was whether they wear a helmet most of the time while biking or cycling. This was further broken down to whether or not they had a child at home. Eighty-seven percent of the age group that had a child at home reported that they wear a helmet most of the time, while 74% of those without a child at home reported they wear a helmet most of the time. If the sample size is 340 for both age groups, is the proportion of helmet use significantly greater when there is a child in the home, at the 0.01 level of significance?
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