A Loaf of Bread Is Normally Distributed with a Mean

question 71

Multiple Choice

A loaf of bread is normally distributed with a mean of 22 ounces and a standard deviation of ½
Ounces.
(i. The probability that a loaf of bread is < 20 ounces is 0.0.
(ii. The probability that a loaf of bread is > 21 ounces is 0.9772.
(iii) The probability that a loaf of bread is < 24 ounces is 0.00.

• A) (i), (ii), and (iii) are all correct statements.
• B) (i) is a correct statement but not (ii) or (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (i) and (ii) are correct statements but not (iii).
• E) (ii) and (iii) are correct statements but not (i).

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Definitions:

Stepper Motor

A type of electric motor that moves in discrete steps, allowing precise control of position and speed, often used in automation and robotics.

Serial Data Transmission

The process of transmitting data one bit at a time, sequentially, over a communication channel.

DC

Direct Current, a form of electrical current that flows in one direction, commonly used in batteries and electronic devices.

Output

Information sent from the processor to a connected device via some interface. The information could be in the form of control data that will signal some device such as a motor to switch on or off or to vary the speed of a drive.