Explain whether the width of a 95 confidence interval would, Ask an Expert

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Explain whether the width of a 95% confidence interval would increase, decrease, or remain the same as a result of the following changes in the design of a survey. Assume that sampling will be from the same population in all cases.

a. A planned sample size is increased from 500 to 1000.

b. A planned sample size is decreased from 1500 to 1000.

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