Use the Appropriate Normal Distribution to Approximate the Resulting Binomial

question 43

Multiple Choice

Use the appropriate normal distribution to approximate the resulting binomial distribution. ​
A fair coin is tossed 20 times. What is the probability of obtaining fewer than 6 heads?
​

• A) The probability is 0.0222.
• B) The probability is 0.0332.
• C) The probability is 0.7401.
• D) The probability is 0.0188.

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Definitions:

Armature

In electrical engineering, the rotating coil or coils of a dynamo or electric motor.

Brushes

Components made of conductive material that transmit electrical current between stationary wires and moving parts, often found in motors and generators.

Commutator

A rotary electrical switch in certain types of electric motors and generators that periodically reverses the direction of current flow through the rotor.

AC Generator

An alternator in a vehicle that converts mechanical energy into alternating current electricity to power electrical systems.