A Loaf of Bread Is Normally Distributed with a Mean

question 80

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 between 20.75 and 23.25 ounces is 0.9876.
(ii. The probability that a loaf of bread is > 21 ounces is 0.9772.

• A) (i) and (ii) are correct statements.
• B) (i) is a correct statement but not (ii).
• C) (ii) is a correct statement but not (i).
• D) (i) and (i) are false statements.

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Definitions:

Iron Formation

A rock composed of millimeter- to centimeter-thick layers of iron-bearing minerals, especially iron oxide, commonly with quartz.

Gypsum Formation

A geological process leading to the creation of gypsum, a mineral used in building materials and fertilizers, through the evaporation of mineral-rich water.

Calcium Carbonate

A chemical compound (CaCO3) found in rocks as the minerals calcite and aragonite and is the main component of pearls, shells of marine organisms, snails, and eggs.

Seawater

The salty water that fills the oceans and seas, composed of a complex mixture of dissolved minerals and organic compounds.