I Trying to Predict Weekly Sales with a Standard Error

question 133

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. A confidence interval can be determined for the mean value of Y for a given value of X.
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:

Indirect Labor

Labor costs not directly tied to the production of goods or services, such as salaries of supervisors and maintenance staff.

Direct Labor Hours

The cumulative hours expended by workers directly engaged in the manufacturing of products or provision of services.

Static Budget

A budget that remains unchanged regardless of changes in activity levels, sales volume, or other variables during the budget period.

Variable Costs

Costs that vary directly with the level of production or volume of output, which includes expenses like raw materials and labor directly involved in production.