Which of the Following Assumptions Concerning the Probability Distribution of the Random

question 172

Multiple Choice

Which of the following assumptions concerning the probability distribution of the random error term is stated incorrectly?

• A)The distribution is normal.
• B)The mean of the distribution is 0.
• C)The variance of the distribution increases as x increases.
• D)The errors are independent from one value of y to the next.

---

Definitions:

One-sided Test

A hypothesis test in which the region of rejection is on only one side of the sampling distribution, assessing either a lower or upper tail.

Alternative Hypothesis

In statistical analysis, the hypothesis that proposes a difference or relationship between two variables, counter to the null hypothesis.

SRS

A sampling method where each element of a population has an equal chance of being selected, ensuring that the sample represents the population fairly.

Null Hypothesis

A hypothesis that suggests there is no statistical significance in the given set of observations, often denoted as H0 and used as a default hypothesis to be tested.