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Ilya [14]
2 years ago
7

Peter is a star runner on the track team in the league championship meet peter records a time that w

SAT
1 answer:
rewona [7]2 years ago
5 0
Petter starts a runner on the track team in the league so that he can get more athletic
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Need help right now please thank you
Elza [17]

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29 %

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check the table for given condition and divide by total no of students

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In the country of United States of Height, the height measurements of ten-year-old children are approximately normally distribut
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Answer:

a) We need to find p(x<68.15)

Standardize x to z, we have, z = (68.15-μ)/σ

=(68.15-57)/8.1

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p(z<1.38) =0.9162.

b) We need to find p(x>54.4)

Standardize x to z, we have, z = (54.4-μ)/σ

=(54.4-57)/8.1

=-0.32

Reading from standard normal tables,

p(z>-0.32) = 0.6255

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2 years ago
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a_sh-v [17]

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