3 years ago

Kiana had a x amount of favorite movies. Leslie had 4 less then Kianas .

Mathematics

1 answer:

OleMash [197]3 years ago

8 0

Kiana $\sqrt{x}$

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Find the two values that x can have if x2 – 12 = 37

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3 years ago

The taxi and takeoff time for commercial jets is a random variable x with a mean of 8.4 minutes and a standard deviation of 3.5

Lorico [155]

Answer:

0.6672 is the required probability.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 8.4 minutes

Standard Deviation, σ = 3.5 minutes

We are given that the distribution of distribution of taxi and takeoff times is a bell shaped distribution that is a normal distribution.

According to central limit theorem the sum measurement of n is normal with mean $\mu$ and standard deviation $\sigma\sqrt{n}$

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Standard Deviation =

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

$P(\sum x < 320) =0.6672 = 66.72\%$

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3 years ago