1 The expression = 0.95 meanS: Ninety five percent (95%) of the means from sampl
ID: 2933063 • Letter: 1
Question
1 The expression = 0.95 meanS: Ninety five percent (95%) of the means from samples of size n deviate from the population mean by no more than ±1.96 standard errors. In repeated samples, you are 95 percent certain that the value of is . The probability that that population mean deviates from the sample mean is 95%. Once you take a specific sample and calculate the value of x, you are 95 percent certain that the value you calculated is . a b c d Among the factors involved in building a confidence interval are: the sample size n, the level of confidence, and the margin of error. Which of the following statements 2 a For a given sample size, a higher confidence level means a smaller margin of error. b For a given confidence level, a sample 16 times as large will make a margin of error one-fourth as big. c For a speciied confidence level, larger samples provide smaller margins of error d Both a and b are true e Both b and c are true 3As part of the course requirement each student taking E270 is to build an interval with a 95% confidence level for the population mean monthly rent for two-bedroom apartments in Marion County. Each student is required to obtain a random sample of size n 100. The number of students participating in this project is 340. After each student submits his/her interval estimate, the instructor would expect about, 323 of these intervals to capture the actual population mean. 315 of these intervals to capture the actual population mean. 303 of these intervals to capture the actual population mean. 95 of these intervals to capture the actual population mearn.Explanation / Answer
1) option a is correct
2) option e is correct as sample size is inversely proportional to square root of sample size.
3)
as fo 95% confidence ; 340*0.95=323 intervals capture the sample mean
therefore option A is correct
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.