Question: 40 Which of the following will decrease the width of a confidence interval for the proportion? I. Increasing the confidence level I. Increasing the sample

40 Which of the following will decrease the width of a confidence interval for the proportion? I. Increasing the confidence level I. Increasing the sample size Ill. Decreasing the confidence level IV. Decreasing the sample size Il only Ill only I and IV Il and Ill Il and IV

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