Question: 95% confidence interval estimate for a population mean is determined to be 43.78 to 52.19. If the confidence level is decreased to 90%, the confidence

95% confidence interval estimate for a population mean is determined to be 43.78 to 52.19. If the confidence level is decreased to 90%, the confidence interval: A.becomes wider.

B.remains the same.

C.becomes narrower.

D.None of these choices are correct.

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