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To ensure Fork-lifts are not over-loaded, design engineers have to consider the weights of cargo. Suppose...

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Statistics

To ensure Fork-lifts are not over-loaded, design engineers haveto consider the weights of cargo. Suppose 400 cargo shipments havenormally distributed weights with a mean of 500 pounds and astandard deviation of 25 pounds. Given a confidence level of95%:

a) What is the error of estimate (E)?

b) What does the sample size have to be if we want the error ofestimate to be no more than 1.5?

Answer & Explanation Solved by verified expert
4.3 Ratings (1009 Votes)
Solution Given thatPoint estimate sample mean 500 poundsPopulation standard    See Answer
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