A Die Is Rolled Nine Times and the Number of Times

question 109

Multiple Choice

A die is rolled nine times and the number of times that two shows on the upper face is counted. If this experiment is repeated many times, find the mean for the number of twos.

• A) 7.5 twos
• B) 3 twos
• C) 2.25 twos
• D) 1.5 twos

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Definitions:

Vitamin D

A fat-soluble vitamin critical for bone health, immune functioning, and modulation of cell growth, obtained through sunlight exposure, diet, and supplements.

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Antibodies

Proteins produced by the immune system to identify and neutralize foreign objects such as bacteria and viruses.

Immune System

The complex network of cells, tissues, and organs that work together to defend the body against attacks by foreign invaders, like bacteria and viruses.