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How has decreasing the size of the sample affected the ci

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Reference no: EM131595408

Question: A parachute assembly and packing plant produces thousands of parachutes each month. One month, 1200 are inspected and it is found that 0.2% have a defect.

(a) Find an estimate with a 99% confidence interval of the proportion of parachutes produced in a month that are defective.

(b) Redo (a), except with a 95% confidence level.

(c) Redo (a), with a 90% confidence level.

(d) Suppose only 800 parachutes are inspected instead of 1200, and it is still found that 0.2% are defective. Now determine an estimate with a 95% confidence interval of the proportion of parachutes produced in a month that are defective. How has decreasing the size of the sample affected the confidence interval(CI)?

Reference no: EM131595408

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