Use the Normal Distribution to Approximate the Desired Probability

question 150

Multiple Choice

Use the normal distribution to approximate the desired probability.
-A coin is tossed 20 times. A person, who claims to have extrasensory perception, is asked to predict the outcome of each flip in advance. She predicts correctly on 16 tosses. What is the probability of being correct 16 or more times by guessing? Does this probability seem to verify her claim?

• A) 0.4931, yes
• B) 0.0069, yes
• C) 0.4931, no
• D) 0.0069, no

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Definitions:

Average Cost

The total cost of production divided by the number of goods produced, representing the cost per unit of output.

Grazing

The act of animals eating grass or other vegetation growing close to the ground.

Average Fixed Cost

is the fixed costs of production divided by the quantity of output produced, showcasing how these costs spread over different production levels.

U-Shaped

A graphical representation where the curve is low in the middle and higher at both ends, indicating a situation where both extremes have similar outcomes that are more favorable or effective than the moderate level.