(Solution) MATH225 Week 5 Assignment – Understanding Normal Distribution

Question

The graph below shows the graphs of several normal distributions, labeled A, B, and C, on the same axis. Determine which normal distribution has the largest standard deviation.

Ans; c

Question

Gail averages 64 words per minute on a typing test with a standard deviation of 9.5 words per minute. Suppose Gail’s words per minute on a typing test are normally distributed. Let X= the number of words per minute on a typing test. Then X∼N(64,9.5).

If necessary, round to three decimal places.

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Provide your answer below:

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Suppose Gail types 89 words per minute in a typing test on Sunday. The z-score

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