A survey of 600 fatal accidents showed that 166 involved

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1. A survey of 600 fatal accidents showed that 166 involved the use of a cell phone. Construct a 99% confidence interval for the proportion of fatal accidents that involved the use of a cell phone.

2. The engineering school at a major university claims that 20% of its graduates are women. In a graduating class of 211 students, 58 were females. Does this suggest that the school is believable? Use alpha =.05.

Reference no: EM13471659

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