I Trying to Predict Weekly Sales with a Standard Error

question 104

Multiple Choice

i. Trying to predict weekly sales with a standard error of estimate of $1,955, we would conclude that 68 percent of the predictions would not be off more than $1,955, 95 percent would not be off by more $3,910, and 99.7 percent would not be off by more than $5,865. ii. The smaller the sample, the smaller the possible error as measured by the standard error of estimate.
iii. Approximately 95% of the values lie within two standard errors of the regression line.

• A) (i), (ii), and (iii) are all correct statements.
• B) (i) and (ii) are correct statements but not (iii).
• 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.

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Definitions:

Inbreeding

The mating of closely related individuals, increasing the chance of offspring inheriting recessive or detrimental traits.

Genetic Bottleneck

An event that drastically reduces the size and genetic diversity of a population, influencing future generations' genetic variation.

Population Size

The sum of people living in a specified region during a specific time period.

Antagonistic Pleiotropy

A genetic situation where a single gene controls more than one trait, but those traits have opposing effects on an organism's fitness.