Exhibit 7-5 Random samples of size 17 are taken from a population…
Question Answered step-by-step Exhibit 7-5 Random samples of size 17 are taken from a population… Exhibit 7-5Random samples of size 17 are taken from a population that has 200 elements, a mean of 36, and a standard deviation of 8.Refer to Exhibit 7-5. The value 36 is _____.Group of answer choicesthe standard error of the proportionthe standard error of the meana statistica parameter2) A theorem that allows us to use the normal probability distribution to approximate the sampling distribution of sample means and sample proportions whenever the sample size is large is known as the _____.Group of answer choicesapproximation theoremnormal probability theoremcentral limit theoremcentral normality theorem3.) The fact that the sampling distribution of the sample mean can be approximated by a normal probability distribution whenever the sample size is large is based on the _____.Group of answer choicescentral limit theoremfact that there are tables of areas for the normal distributionassumption that the population has a normal distributionnormal probability theorem4) Exhibit 7-4A random sample of 121 bottles of cologne showed an average content of 4 ounces. It is known that the standard deviation of the contents (i.e., of the population) is 0.22 ounces.Refer to Exhibit 7-4. In this problem, the .22 is _____.Group of answer choicesa parameter,a statistic,the standard error of the mean,the average content of colognes in the long run.5) A population has a mean of 84 and a standard deviation of 12. A sample of 36 observations will be taken. The probability that the sample mean will be between 80.54 and 88.9 is _____.Group of answer choices.0347,.7200,.9511,.56456) Stratified random sampling is a method of selecting a sample in which _____.Group of answer choicesthe sample is first divided into groups, and then random samples are taken from each group,various strata are selected from the sample,the population is first divided into groups, and then random samples are drawn from each group,the elements are selected on the basis of convenience,7) As a general rule, the sampling distribution of the sample proportions can be approximated by a normal probability distribution whenever _____.Group of answer choicesnp ≥ 5n(1 − p) ≥ 5n ≥ 30np ≥ 5 and n(1 − p) ≥ 58) The expression used to compute an interval estimate of μ may depend on any of the following factors EXCEPT _____.Group of answer choicesthe sample size,whether the population standard deviation is known,whether the population has an approximately normal distribution,whether there is sampling error9) A random sample of 36 students at a community college showed an average age of 25 years. Assume the ages of all students at the college are normally distributed with a standard deviation of 1.8 years. The 98% confidence interval for the average age of all students at this college is _____.Group of answer choices24.301 to 25.699,24.385 to 25.615,23.200 to 26.800,23.236 to 26.76410) A random sample of 25 employees of a local company has been measured. A 95% confidence interval estimate for the mean systolic blood pressure for all company employees is 123 to 139. Which of the following statements is valid?Group of answer choices95% of the sample of employees has a systolic blood pressure between 123 and 139.If the sampling procedure were repeated many times, 95% of the resulting confidence intervals would contain the population mean systolic blood pressure.95% of the population of employees has a systolic blood pressure between 123 and 139.If the sampling procedure were repeated many times, 95% of the sample means would be between 123 and 139. Math Statistics and Probability DSI LYTC Share QuestionEmailCopy link Comments (0)
