Questions from Business Statistics

Q: Do exercise 8 using the binomial proportion p in place of X

Do exercise 8 using the binomial proportion p in place of X. Data from exercise 8: Continuing with the sample from exercise 2: a.* Find the binomial X for the gender variable (counting the number of...

Q: Distinguish stationary and non stationary time-series behavior.

Distinguish stationary and non stationary time-series behavior.

Q: For each of the following, say whether it is stationary or

For each of the following, say whether it is stationary or non stationary: a. Autoregressive process. b. Random walk. c. Moving-average process. d. ARMA process.

Q: Are statistical estimates always correct? If not, what else will

Are statistical estimates always correct? If not, what else will you need (in addition to the estimated values) in order to use them effectively?

Q: What kinds of additional terms are needed to include seasonal behavior in

What kinds of additional terms are needed to include seasonal behavior in advanced ARIMA models?

Q: Why can the standard error of the average difference be a different

Why can the standard error of the average difference be a different number depending on which samples you are comparing?

Q: Name and interpret the two sources of variation in the one-

Name and interpret the two sources of variation in the one-way analysis of variance.

Q: Which assumption helps the data be representative of the population?

Which assumption helps the data be representative of the population?

Q: What assumptions are required concerning the distribution of each population?

What assumptions are required concerning the distribution of each population?

Q: View this database as a population. Consider the following sample of

View this database as a population. Consider the following sample of five employee numbers from this database: 24, 54, 17, 34, and 53. a. Find the average, standard deviation, and standard error for a...