In order to estimate the percentage of adults who file their taxes at least tw deadline, a 99% confidence interval is constructed. The interval ends up being from 0.756 to 0.864. Which of the following could be a 90% confidence interval for the same sample data? I. 0.749 to 0.871 II. 0.776 to 0.844 III. 0.765 to 0.875 IV. 0.799 to 0.841 IV only None of the answer options are reasonable 90% confidence intervals. O III only Il only OI only

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Q: If n=32, ¯xx¯(x-bar)=31, and s=14, construct a confidence interval at a 95% confidence level. Assume…

A: Given: x¯=31n=32s=1495% confidence level

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Q: Construct a confidence interval for the mean of the paired differences for the two populations with…

A: Solution: From the given information, n=32, d-bar=1.358, α=0.05 and sd=0.635.

Q: For the same sample proportion and sample size, what happens to the width of a confidence interval…

A: Solution-: For the same sample proportion and sample size, what happens to the width of a confidence…

Q: If n=10, ī(x-bar)=37, and s=19, construct a confidence interval at a 95% confidence level. Assume…

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A: From the above data  We are given that the  95% confidence interval is (10, 10.5). The population…

Q: Construct a confidence interval for the mean of the paired differences for the two populations with…

A: Given, sample size (n) = 37 sample mean ( d̄ ) = 4.132  Standard deviation ( Sd )  = 0.749…

Q: If n = 370 and p=0.31p, construct a 90% confidence interval. This should be rounded to three decimal…

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Q: You must estimate the mean temperature (in degrees Fahrenheit) with the following sample…

A: The data values given are: 50.3 40.8 37.9 49.2 42.2 31.6 60.8 37.6 46.8 50.3 Calculate mean…

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Q: the following sample was taken from a normally distributed population: 20,27,15,2016,22 and 13. A…

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Q: If n=540 and (p-hat) = 0.13, construct a 99% confidence interval. Give your answers to three…

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A: Solution

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Q: 13, ¤(x-bar)=39, and s=16, construct a confidence interval at a 90% confidence level. Assume the…

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Q: If n=240 and X = 192, construct a 90% confidence interval. Enter your answer as an open-interval…

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Q: Construct a 9595​% confidence interval of the population proportion using the given information. x…

A: Given,x=175n=250α=1-0.95=0.05α2 =0.025Z0.025 =1.96Sample proportion(p^)=Xn p^ =175250 =0.71-p^…

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Q: ou must estimate the mean temperature (in degrees Fahrenheit) with the following sample…

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Q: f n=19, sample mean=50, and s =8, construct a confidence interval at a 99% confidence level. Assume…

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Q: If n = 530 and X = 424, construct a 99% confidence interval for the population proportion, p. Give…

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Q: If n= 220, p-hat= .4, then what will be the 87.4% confidence interval for the population proportion?

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Q: 20. Suppose a 90% confidence interval is stated as (0.3011, 0.4189). What is the sample proportion…

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Q: A sample of freshman takes a reading comprehension test and their scores are summarized below.…

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