Crash testing is a highly expensive procedure to evaluate the ability of an automobile to withstand a serious accident. A simple random sample of 12 small cars were subjected to a head-on collision at 40 miles per hour. Of them 8 were “totaled,” meaning that the cost of repairs is greater than the value of the car. Another sample of 15 large cars were subjected to the same test, and 5 of them were totaled. Find a 95% confidence interval for the difference in the proportions of small cars and large cars that are totaled.

What will be an ideal response?


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An individual with an inferior genotype can rank higher phenotypically than individuals with superior genotypes because of favorable environmental effects.

Answer the following statement true (T) or false (F)

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Which of the following is not an advantage of having CNC engine rebuilding equipment?

A. Increased accuracy B. No training requirements C. Reduced errors D. Higher quality of machining

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The gestation period of hamsters is about

A. 16 days B. 36 days C. 56 days D. 76 days E. None of the above

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Define the arc flash boundary.__________________________________________________________________________________________________________________________________________

What will be an ideal response?

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