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Coffee: The National Coffee Association reported that 62% of U.S. adults drink coffee daily. A random sample of 275 U.S. adults is selected. Round your
Coffee: The National Coffee Association reported that 62% of U.S. adults drink coffee daily. A random sample of 275 U.S. adults is selected. Round your answers to at least four decimal places as needed. Part 1 of 6 (a) Find the mean un . The mean un is Part 2 of 6 (b) Find the standard deviation on . The standard deviation on is Part 3 of 6 (c) Find the probability that more than 66% of the sampled adults drink coffee daily. The probability that more than 66% of the sampled adults drink coffee daily is(d) Find the probability that the proportion of the sampled adults who drink coffee daily is between 0.53 and 0.71. The probability that the proportion of the sampled adults who drink coffee daily is between 0.53 and 0.71 is Part 5 of 6 (e) Find the probability that less than 57% of sampled adults drink coffee daily. The probability that less than 57% of sampled adults drink coffee daily is Part: 5 / 6 Part 6 of 6 (f) Would it be unusual if less than 56% of the sampled adults drink coffee daily? X It (Choose one) be unusual if less than 56% of the sampled adults drink coffee daily, sir would S would notA sample of size n= 47 is drawn from a population whose standard deviation is o = 48. Part 1 of 2 (a) Find the margin of error for a 99% confidence interval for u. Round the answer to at least three decimal places. The margin of error for a 99% confidence interval for u is Part 2 of 2 (b) If the sample size were n= 53, would the margin of error be larger or smaller? (Choose one) V because the sample size is (Choose one) XA population has standard deviation o = 17.6. Part 1 of 2 (a) How large a sample must be drawn so that a 99.8% confidence interval for u will have a margin of error equal to 4.9? Round the critical value to no less than three decimal places. Round the sample size up to the nearest integer. A sample size of is needed to be drawn in order to obtain a 99.8% confidence interval with a margin of error equal to 4.9. Part 2 of 2 (b) If the required confidence level were 90%, would the necessary sample size be larger or smaller? (Choose one) A , because the confidence level is (Choose one) Submit AssignnA sample of size n = 53 has sample mean x - 53.5 and sample standard deviation s = 9.3. Part: 0 / 2 Part 1 of 2 Construct a 95% confidence interval for the population mean u. Round the answers to one decimal place. A 95% confidence interval for the population mean u is
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