True or false: Suppose that the 98% confidence interval from question 2 was 10 ± 2.37. A correct interpretation of this confidence interval would be: The confidence interval from 7.63 to 12.37 includes the mean number of drinks consumed per month in the population in 98% of all possible samples.

Q: If n=16, ¯xx¯(x-bar)=46, and s=12, construct a confidence interval at a 95% confidence level. Assume…

A: Given n=16 x=46 s=12 CL=95% Data is normally distributed

Q: If n = 220,p = 0.4,then what will be the 87.4% confidence interval for the population proportion?

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Q: A 95% confidence interval for a population mean was reported to be 134 to 142.  If the population…

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Q: If a 90% confidence interval for the mean is (75.3 to 80.9), we would reject H0 : = 70 in favor of…

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Q: If n=19, ¯xx¯(x-bar)=37, and s=13, construct a confidence interval at a 99% confidence level. Assume…

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Q: If n=13, (x-bar)=48, and s=12, construct a confidence interval at a 95% confidence level. Assume the…

A: Mean = 48Standard deviation = 12Sample size = 13

Q: If n=12, (x-bar)=33, and s=16, construct a confidence interval at a 80% confidence level. Assume the…

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Q: If n=12, =49, and s=8, construct a confidence interval at a 80% confidence level. Assume the data…

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Q: n=31, ¯xx¯(x-bar)=30, and s=5, construct a confidence interval at a 98% confidence level. Assume the…

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Q: If n=18, ¯x=x¯=34, and ss=15, construct a confidence interval at a 98% confidence level. Assume the…

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Q: If n=24, ¯xx¯(x-bar)=49, and s=9, construct a confidence interval at a 80% confidence level. Assume…

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Q: If n=22, ē(x-bar)=42, and s=19, construct a confidence interval at a 80% confidence level. Assume…

A: Solution: From the given information, n=22, x-bar=42 and s=19.

Q: If n 28, = 37, and s = 6.2, construct a confidence interval at a 97% confidence level. Assume the…

A: Solution: The following information is given to us: s=6.2 n =28 A 97% confidence interval is…

Q: Suppose that you have obtained data by taking a random sample from a population and that you intend…

A: 95% percent confidence interval will give more accurate estimate of µ than 99% confidence interval.…

Q: If n=20, (x-bar)=47, and s=15, construct a confidence interval at a 99% confidence level. Assume the…

A: The sample size is 20, sample mean is 47, and sample standard deviation is 15. The degrees of…

Q: A 95% confidence interval for p is given (0.26,0.52). How large was the sample used to construct…

A: Given, A 95% confidence interval for true proportion p : (0.28,0.52) To find: the sample size (n) to…

Q: If n=14, (x-bar)=46, and s=18, construct a confidence interval at a 80% confidence level. Assume the…

A: Since population standard deviation is unknown, Use t-distribution to find t-critical value. Find…

Q: A 95% confidence interval for a population mean was reported to be 152 to 160. If s = 15,what sample…

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Q: A sample with 45 observations is taken. The mean is found to be 25, while the population standard…

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Q: If n=21, (x-bar)=37, and s=3, construct a confidence interval at a 90% confidence level. Assume the…

A: Given Information: Sample size n=21 Sample mean x¯=37 Sample standard deviation s=3 Confidence level…

Q: You are comparing men and women on hours spent watching TV. You pick a sample of 12 men and 14 women…

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Q: If X̅ = 65, ? = 20 ??? ? = 36, construct a 95% confidence interval estimate for the population mean,…

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Q: If n=16, ¯xx¯(x-bar)=45, and s=17, construct a confidence interval at a 99% confidence level. Assume…

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Q: If n=17, (x-bar)=48, and s=2, construct a confidence interval at a 80% confidence level. Assume the…

A: We have to construct confidence interval for mean of single normal population.

Q: Suppose that you have obtained data by taking a random sample from a population and that you intend…

A: If the level of confidence increases then the standard error of statistic also increases. The margin…

Q: If you obtained one thousand 95% confidence intervals for a population mean, μ, roughly how many of…

A: A 95% confidence interval means that if we take 100 different samples and determine a 95% confidence…

Q: A random sample of high school students is used to estimate the mean time all high school students…

A: Given at  99% confidence interval based on this sample is: 1.7 hours to 3.1 hours.  sample mean=?…

Q: If n=14, ¯xx¯(x-bar)=34, and s=4, construct a confidence interval at a 80% confidence level. Assume…

A: Given , Sample size n = 14 Mean = x bar = 34 Standard deviation  s = 4

Q: If n=22, 7(x-bar)=34, and s=17, construct a confidence interval at a 99% confidence level. Assume…

A: According to the given information, we have Sample size, n = 22 Sample mean = 34 Sample standard…

Q: If n=17, ¯xx¯(x-bar)=50, and s=20, construct a confidence interval at a 98% confidence level. Assume…

A: Given,sample size(n)=17sample mean(x¯)=50sample standard deviation(s)=20degrees of…

Q: If you obtained one thousand 95% confidence intervals for a population mean, µ, roughly how many of…

A: Solution: We have to determine:If we obtained one thousand 95% confidence intervals for a population…