2 years ago

Please help with math problem if do 5 star

Mathematics

1 answer:

sasho [114]2 years ago

4 0

Answer:

Step-by-step explanation:

yes

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3 years ago

Andrea and Ashley are middle distance runner's for the schools traffic and FaceTime in the 500 m race are approximately normally

swat32

Answer:

0.006 is the probability that the record will be broken in next year.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 62 seconds

Standard Deviation, σ = 0.8 seconds

We are given that the distribution of face time is a bell shaped distribution that is a normal distribution.

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P(time is less than 60 seconds)

P(x < 60)

$P( x < 60) = P( z < \displaystyle\frac{60 - 62}{0.8}) = P(z < -2.5)$

Calculation the value from standard normal z table, we have,

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