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Suppose a 99% confidence interval for a population proportion was (0.45, 0.55). Which of the following would be a plausible 90% confidence interval for the

Suppose a 99% confidence interval for a population proportion was (0.45, 0.55). Which of the following would be a plausible 90% confidence interval for the same proportion?

a. (0.45, 0.55)

b. (0.405,0.495)

c. (0.47, 0.53)

d. (0.47, 0.50)

e. (0.42, 0.57)

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