I Trying to Predict Weekly Sales with a Standard Error

question 127

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. Approximately 95% of the values lie within two standard errors of the regression line.
iii. The smaller the sample, the smaller the possible error as measured by the standard error of
Estimate.

• 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:

JIT Partnerships

Collaborations between companies and their suppliers to implement Just-In-Time inventory strategies, aiming to reduce waste and increase efficiency.

In-plant Inventory

The stock of goods and materials held within a manufacturing plant for the production process or for immediate use.

Small Lots

Production or shipment of goods in small quantities, often used to reduce inventory costs and increase flexibility.

Setup Times

The duration required to prepare equipment, tools, and machinery for a specific task or to switch from one production operation to another.