In a Particular Industry It Is Known That the Standardized

question 5

Multiple Choice

In a particular industry it is known that the standardized regression coefficient for predicting likely profit from number of advertisements is .7. A company is planning to place 18 advertisements. Which of the following pieces of information will be needed as part of predicting the actual amount of profit?

• A)Length of time the company has been in business
• B)Mean number of advertisements in general and standard deviation
• C)This company's profit to date
• D)This company's number of advertisements in the previous year

---

Definitions:

Electromagnetic Latching Relay

A type of relay that maintains its state after being actuated, using a permanent magnet to hold the armature in position until it is reset.

Latch Coil

A coil in a relay or electrical circuit that, once energized, maintains its state until it is specifically reset, allowing it to function as a memory element in a control system.

Unlatch Coil

An instruction or action that interrupts the current flow to a coil, allowing a relay or similar device to return to its de-energized state.