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A random sample of size 140 taken from a population yields a proportion equal to 0.32. Complete parts a through d below. Click the icon
A random sample of size 140 taken from a population yields a proportion equal to 0.32. Complete parts a through d below. Click the icon to view a table of critical values for commonly used confidence levels. a. Determine if the sample size is large enough so that the sampling distribution can be approximated by a normal distribution. Since np = _and n(1 - p) = ], the sample size large enough. (Round to the nearest whole number as needed.) b. Construct a 90% confidence interval for the population proportion. (Round to three decimal places as needed. Use ascending order.) C. Interpret the confidence interval calculated in part b. Which statement below correctly interprets the confidence interval? O A. There is a 0.90 probability that the sample proportion is in the interval. O B. There is 90% confidence that the population proportion is in the interval. O C. There is a 0.90 probability that the population proportion is in the interval. O D. Of all the possible population proportions, 90% are in the interval. d. Produce the margin of error associated with this confidence interval. e= (Round to three decimal places as needed.)
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