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3 years ago

Each of five friends has between $3.50 and $4.25. Which could be the total amount of money the five friends have?

Mathematics

2 answers:

Elenna [48]3 years ago

8 0

Maybe $20 because you round the number to $4 and multiply that by 5 and it gets you an estimate of $20

sleet_krkn [62]3 years ago

7 0

The answer would be around $20

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3 years ago

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3 years ago

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.

3 0

3 years ago