Use the Normal Distribution to Approximate the Desired Probability

question 6

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 14 tosses. What is the probability of being correct 14 or more
Times by guessing? Does this probability seem to verify her claim?

• A) 0.0582, no
• B) 0.4418, yes
• C) 0.4418, no
• D) 0.0582, yes

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Definitions:

Digit-Span

A common memory test that measures the capacity of one's short-term memory to recall a sequence of numbers.

Short-Term Memory

A component of memory where small amounts of information can be stored for a short period of time.

Working Memory

The part of short-term memory that is concerned with immediate conscious perceptual and linguistic processing.

Short-Term Memory

The part of the memory system where information is stored for a short duration, typically seconds to minutes, before it is either forgotten or transferred to long-term memory.