Find the confidence interval for a population mean of 615 acres at a

Question 2.2. Which of the following distributions is most likely to approach a normal distribution? (Points : 1)distribution of all possible sample means of sample size 90distribution of all possible sample means of sample size 60distribution of all possible sample means of sample size 120distribution of all possible sample means of sample size 30 Question 1 Find the confidence interval for a population mean of 615 acres at a 90% level of confidence with a sample size of 52 and standard deviation of 27 acres. (Points : 1)189 to 1190 acres608.84 to 621.16 acres452 to 4252 acres172 to 2008 acres Question 3 A sample was taken of computation errors on an exam: 4, 7, 3, 8, 4, 4, 6, 1, 5, 2, 4, 8, 5, 4, 5. What value should be used for the population standard deviation? (Points : 1)0.511.99none, since the population standard deviation should never be estimated1.92 Question 5.5. Confidence interval estimates of a population parameter ________. (Points : 1)provide a range of values within which the true value of the parameter is believed to bespecify a value that accurately predicts the population parametereliminates the effect of sampling errorare used solely to estimate the value of population variance Question 6.6. All of the following are reasons why random sampling is important for statistical applications except ________. (Points : 1)the outcomes are more readily understood and therefore really usablesolving using mathematics alone may be very difficult if not impossiblethe outcome variables are complicated functions of several input random variablessampling experiments can be used to better understand important statistics theories Question 7.7. For a sample size of 12, the degrees of freedom are ________. (Points : 1)13144113.46 Question 8.8. A quality assurance technician has checked fifteen 2-liter bottles of a soft drink finding a 99% confidence interval of 1950 ml to 2025 ml for the mean fill volume. Which of the following is true? (Points : 1)The sample indicates that the population mean lies between 1950 and 2025 ml.There is a 99% likelihood that the bottles are being under-filled so the bottling process should be stopped.The technician should recalculate at a 95% confidence interval.The sample indicates that the sample mean lies closer to 2 liters than not. Question 9.9. Regarding the standard error of the mean, ________. (Points : 1)as the sample size increases, the standard error increasesas the sample size decreases, the standard error decreasesas the sample size increases, the standard error decreasesit is defined as one-half of the population standard deviation Question 10.10. A point estimate is used ________. (Points : 1)because it’s easier to use all the values in the data set than a single valueto estimate the value of a population estimatewhen the population parameter is knownonly when the population proportion is not known Question 11.11. Find the standard error of the mean when the population standard deviation is 2.4 and a sample of size 36 is taken. (Points : 1)4.030.614.40.4 Question 13.13. The standard error of the mean is ________. (Points : 1) the variance of the sampling distribution of the meanthe standard deviation of the sampling distribution of the meanthe range of the sampling distribution of the meanthe mean of the sampling distribution of the standard deviations Question 15.15. Find the confidence interval for a population mean of 1.6 pounds at a 95% level of confidence with a sample size of 112 and standard deviation of 0.2 pounds. (Points : 1)1.89 to 1.90 pounds4.52 to 42.52 pounds1.56 to 1.64 pounds1.72 to 2.08 pounds Question 16.16. Which of the following is a subjective sampling method? (Points : 1)cluster samplingjudgment samplingsystematic samplingstratified sampling Question 17.17. The margin of error used in a confidence interval is found by ________. (Points : 1)multiplying the standard error by zα/2multiplying the population standard deviation and the sample sizedividing the population standard deviation by the sample multiplying the level of confidence and the standard error 18. A sample mean of 4.56 ounces was just measured from a population of which the population mean is not known. What value should be used for the population mean? (Points : 1)2.125 ouncesnone, since the population mean cannot be estimated4.56 ouncesthe average of all the sample means

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