Determine the value of c for each figure

A study of the impact of executive networking on firm performance measured firm performance as annual return on equity (ROE), r

vova2212 [387]

Answer:

The value of ROE that will be exceeded by 78% of the firms is -1.77%.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma,$ the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

The mean ROE for the firms studied was 14.93% and the standard deviation was 21.74%. This means that $\mu = 0.1493, \sigma = 0.2174$

What value of ROE will be exceeded by 78% of the firms?

This is the value of X when Z has a pvalue of 1-0.78 = 0.22.

This is $Z = -0.77$

So:

$Z = \frac{X - \mu}{\sigma}$

$-0.77 = \frac{X - 0.1493}{0.2174}$

$X - 0.1493 = -0.77*0.2174$

$X = -0.0177$

The value of ROE that will be exceeded by 78% of the firms is -1.77%.

3 0

2 years ago

Select all the ratios equivalent to 16/14<br>24:21<br>32:28<br>21:7

pashok25 [27]

Answer:

First and second. 24:21, 32:28

Step-by-step explanation:

Just do it. Hope I helped you!;)

5 0

3 years ago

Read 2 more answers

Find the radius of a circle, given that the center is at (3,-3) and the point (7,6) lies on the circle.

Alenkasestr [34]

Answer:

$\large\boxed{radius=\sqrt{97}}$

Step-by-step explanation:

The radius is the distance between the center and any point on the circle.

The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

We have the center (3, -3) and other point on the circle (7, 6).

Substitute:

$r=\sqrt{(6-(-3))^2+(7-3)^2}=\sqrt{9^2+4^2}=\sqrt{81+16}=\sqrt{97}$

3 0

2 years ago

Read 2 more answers

Which expression can be used to find the volume of the sphere?

Kryger [21]

Answer:

They used 3.14 for pi:

$V=\frac{4}{3} \pi r^3$

$V=\frac{4}{3} (3.14)(5)^3$

Step-by-step explanation:

$V=\frac{4}{3}\pi r^3$ is the volume of a sphere with radius r.

I think that is the diameter given in the picture.

The radius is half the diameter.

So the radius is 5 since the diameter is 10.

Plug in this gives you:

$V=\frac{4}{3} \pi (5)^3$

4 0

2 years ago

Read 2 more answers

a recipe calls for 6 cups water and 4 cups of flour if the recipe is increased how many cups of water should be used with 6 cups

ololo11 [35]

$6\ cups\ of\ water\ for\ 4\ cubs\ of \ flour\\\\
x\ cups\ of\ water\ for\ 6\ cubs\ of \ flour\\\\making\ proportion\\\\
6-4\\x-6\\\\cross\ multiplication\\\\
6*6=4x\\\\
36=4x\ \ \ \ | divide\ by\ 4\\\\
x=9\\\\
9\ cups\ of\ water\ should\ be\ used.$

8 0

2 years ago