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2 years ago

If the volume of a cube is 27 metre cube find one of side

Mathematics

1 answer:

Irina-Kira [14]2 years ago

8 0

All the sides are 3 since volume is L*W*H you get 3*3*3 = 9*3 = 27

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A sports news station wanted to know whether people who live in the North or the South are bigger sports fans. For its study, 17

Free_Kalibri [48]

Using the z-distribution, it is found that the 95% confidence interval for the difference is (-1.3, -0.7).

<h3>What are the mean and the standard error for each sample?</h3>

Considering the data given:

$\mu_S = 3.8, n = 175, s_S = \frac{1.7}{\sqrt{175}} = 0.1285$

$\mu_N = 4.8, n = 152, s_N = \frac{1.2}{\sqrt{152}} = 0.0973$

<h3>What is the mean and the standard error for the distribution of differences?</h3>

The mean is the subtraction of the means, hence:

$\overline{x} = \mu_S - \mu_N = 3.8 - 4.8 = -1$

The standard error is the square root of the sum of the variances of each sample, hence:

$s = \sqrt{s_S^2 + s_N^2} = \sqrt{0.1285^2 + 0.0973^2} = 0.1612$

<h3>What is the confidence interval?</h3>

It is given by:

$\overline{x} \pm zs$

We have a 95% confidence interval, hence the critical value is of z = 1.96.

Then, the bounds of the interval are given as follows:

$\overline{x} - zs = -1 - 1.96(0.1612) = -1.3$

$\overline{x} + zs = -1 + 1.96(0.1612) = -0.7$

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ1

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1 year ago

Consider f(x) = 2x^2 + 1 and g(x) = 3x - 6. Which statement about f + g is true?

Vika [28.1K]

Answer:

Vertex of a quadratic function (formula)

Step-by-step explanation:

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3 years ago

Question down below. Thank you

Ann [662]

Answer:

N/A.

Step-by-step explanation:

I will not answer your question and I will be flagging it due to you adding a test/exam question.

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3 years ago

Carys calculates the total amount EEE, in dollars, that she earns for working hhh hours using the equation E=10hE=10hE, equals,

timurjin [86]

Answer:

$10 per hour
0.1 hours

Step-by-step explanation:

To find Carys' earnings in one hour, fill in h=1 in the formula:

E = 10·1 = 10

Carys earns 10 dollars per hour.

To find the number of hours required to earn 1 dollar, fill in E=1 in the formula:

1 = 10h

0.1 = h . . . . . divide by 10

It takes 0.1 hours for Carys to earn 1 dollar.

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3 years ago

Read 2 more answers

Caelan has $ 7,500 in an account that earns 3.2% compounded interest annually. If she doesn't touch the money, how much will it

juin [17]

7500(1+0.032)5=

1.032 to the power of 5= 1.171

7500x 1.171=8,782

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2 years ago

If the volume of a cube is 27 metre cube find one of side​

If the volume of a cube is 27 metre cube find one of side