Help me please on the equation

Mathematics

1 answer:

bixtya [17]3 years ago

5 0

1. 10x+5=35

2. 5x+10=35

3. 35x+5=10

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The starting salaries of individuals with an MBA degree are normally distributed with a mean of $40,000 and a standard deviation

antiseptic1488 [7]

Answer:

$P(X>30000)=P(\frac{X-\mu}{\sigma}>\frac{30000-\mu}{\sigma})=P(Z-2)$

And we can find this probability using the complement rule and the normal standard distribution

$P(z>-2)=1-P(z$

Step-by-step explanation:

Let X the random variable that represent the starting salaries of individuals with a MBA of a population, and for this case we know the distribution for X is given by:

$X \sim N(40000,5000)$

Where $\mu=40000$ and $\sigma=5000$

We are interested on this probability

$P(X\geq 30000)$

And the best way to solve this problem is using the normal standard distribution and the z score given by:

$z=\frac{x-\mu}{\sigma}$

Using this formula we got:

$P(X>30000)=P(\frac{X-\mu}{\sigma}>\frac{30000-\mu}{\sigma})=P(Z-2)$

And we can find this probability using the complement rule and the normal standard distribution

$P(z>-2)=1-P(z$

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3 years ago

If T(n) = n - 7, what is the 5th term

Phantasy [73]

For this equation, you simply plug in the number 5 every time you see an n. So T(5)=5-7, which equals -2

6 0

3 years ago

A sphere has a volume of 33.5 cubic inches. which value is closest to the radius of this sphere in inches?

EastWind [94]

Radius = cube root (sphere volume * .75 / PI)radius = cube root (33.5 * .75 / PI)radius = cube root ( 7.9975358904)
radius =2 inches
Source: http://www.1728.org/diam.htm