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3 years ago

What is 3 to the 4th power

Mathematics

2 answers:

Marina CMI [18]3 years ago

6 0

"3 to the 4th power" means (3 x 3 x 3 x 3) = 81 .

andrey2020 [161]3 years ago

6 0

3 to the 4th power is literally 3*3*3*3. So then the answer is 81.

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Read 2 more answers

A college football coach has decided to recruit only the heaviest 15% of high school football players. He knows that high school

Alla [95]

Answer:

The coach should start recruiting players with weight 269.55 pounds or more.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 225 pounds

Standard Deviation, σ = 43 pounds

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

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.15

$P( X > x) = P( z > \displaystyle\frac{x - 225}{43})=0.15$

$= 1 -P( z \leq \displaystyle\frac{x - 225}{43})=0.15$

$=P( z \leq \displaystyle\frac{x - 225}{43})=0.85$

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

$P(z < 1.036) = 0.85$

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Thus, the coach should start recruiting players with weight 269.55 pounds or more.

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3 years ago