A 99 confidence interval estimate of the population mean can be interpreted to mean:

A 99 confidence interval estimate of the population mean  can be interpreted to mean:
 a. if all possible sample are taken and confidence intervals created, 99 of them would include the true population mean somewhere within their interval.
  b. we have 99 confidence that we have selected a sample whose interval does include the population mean.
  c. we estimate that the population mean falls between the lower and upper confidence limits, and this type of estimator is correct 99 of the time.
  d. All of these choices are true.

Q. 2

In a multiple regression model, the error variable is assumed to have a mean of:
 a. -1.0 c. 1.0
  b. 0.0 d. None of these choices.

Q. 3

The larger the confidence level, the:
 a. smaller the value of z / 2.
  b. wider the confidence interval.
  c. smaller the probability that the confidence interval will contain the population mean.
  d. None of these choices.

Q. 4

In a multiple regression model, the following statistics are given: SSE = 100, R2 = 0.995, k = 5, and n = 15 . Then, the coefficient of determination adjusted for degrees of freedom is:
 a. 0.992 c. 0.955
  b. 0.900 d. 0.855

Q. 5

Which of the following is not a part of the formula for constructing a confidence interval estimate of the population mean?
 a. A point estimate of the population mean.
  b. The standard error of the sampling distribution of the sample mean.
  c. The confidence level.
  d. The value of the population mean.