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Suppose adults in a particular town drive a mean of 65 mph with a standard devia

Hog95

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10 years ago

Suppose adults in a particular town drive a mean of 65 mph with a standard devia

Suppose adults in a particular town drive a mean of 65 mph with a standard deviation of 15 mph. Using the normal curve table,
a.   What percentage of adults drive below 35 mph?
b.   What percentage of adults drive below 68 mph or above 85 mph?
c.   What percentage of adults drive between 56 and 80 mph?
d.   At what speed does someone need to drive to be included in the top 10%?
e.   At what speed does someone need to drive to be included in the bottom 25%?
f.   Explain your answers to a person who is familiar with mean, standard deviation, and Z scores, but not with normal curve percentages.

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Hog95 Author

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9 years ago

Thank you so much for the reply. Your answer makes a lot of sense.

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Banajwba

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4 years ago

Here's my approach Slight Smile

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Mlbr4

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4 years ago

Thanks

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idk1230

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3 years ago

awesome

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tenni f.

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3 years ago

thankyou

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Jleos

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3 years ago

Thank you!

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Kendall D.

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A year ago

thank you

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earagon1234

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A year ago

Thank you!

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alexsfuneral

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#10

One day ago

Thx

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