3 years ago

Do you have to take statistics in college

Mathematics

1 answer:

Alenkasestr [34]3 years ago

3 0

No you dont if you dont want ..

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The weight of people in a small town in missouri is known to be normally distributed with a mean of 154 pounds and a standard de

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If a random sample of 20 persons weighed 3,460, the sample mean x-bar would be 3460/20 = 173 pounds.
The z-score for 173 pounds is given by:
$z=\frac{173-154}{29}=0.655$
Referring to a standard normal distribution table, and using z = 0.66, we find:
$P(\bar x\ \textless \ 173)=0.7454$
Therefore
$P(\bar x\ \textgreater \ 173)=1-0.7454=0.2546$
The answer is: 0.2546

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4 years ago

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Alenkinab [10]

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3 years ago

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denis23 [38]

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