I the T Distribution Is Positively Skewed

question 27

Multiple Choice

i. The t distribution is positively skewed. ii. All t distributions have the same mean of zero and a standard deviation of 1.
iii. The t distribution is more spread out and flatter at the center than is the standard normal distribution. However, as the sample size increases, the t distribution curve approaches the standard normal distribution.

• A) (i), (ii), and (iii) are all correct statements.
• B) (iii) is a correct statement but not (i) or (ii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (i), (ii), and (iii) are all false statements.

---

Definitions:

Time Series Model Analysis

Statistical techniques used to analyze time-ordered data points to forecast future trends.

Regression Analysis

A statistical method used for estimating the relationships among variables, often to predict the impact of one or more independent variables on a dependent variable.

Structural Equation Modelling Analysis

A statistical technique that is used to analyze structural relationships between measured variables and latent constructs.

Delphi Technique

The Delphi Technique is a forecasting method involving iterative rounds of questionnaires sent to a panel of experts, the results of which are aggregated and shared with the panel until a consensus is reached.