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2 years ago

12

What is 39 percent of 120?

1 answer:

Ira Lisetskai [31]2 years ago

3 0

46.8 is the answer to the problem

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The Statue of Liberty in New York stands on top of a foundation and a pedestal. The statue, including foundation and pedestal, m

Irina18 [472]

The answer is 154 because if you subtract the total by only the statue that’s the answer you’ll get :)

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2 years ago

Read 2 more answers

If f(x) = 9x - 8 and g(x) = x, what is (gºn(1)?

lesantik [10]

Answer:

use the app socratic it’s step by step .

Step-by-step explanation:

6 0

2 years ago

Construct a confidence interval that will capture the true population mean with 95% confidence. Population standard deviation is

kompoz [17]

A confidence interval that will capture the true population mean with 95% confidence. The value is ( 23.6459 , 24.8293 ) .

What is population mean?

A population in statistics is a group of comparable objects or occurrences that are relevant to a particular topic or experiment. A statistical population can be a collection of real things or a hypothetical, possibly limitless collection of objects derived from experience.

Data: 18

for given data

$\begin{aligned}\bar{X} & =\frac{\sum X i}{n} \\& =2448 / 101 \\& =24.2376\end{aligned}$

as population variance is unknown so we used sample variance

$\begin{aligned}S^2 & =\frac{1}{n-1}\left(\sum X i^2-n \times \bar{X}^2\right) \\S^2 & =\frac{1}{100}\left(60232-101 \times 24.2376^2\right) \\& =8.9830\end{aligned}$

Now

$\frac{\bar{X}-\mu}{S / \sqrt{n}} \sim t_{n-1}$$$

hence 95 % of population mean is

As n=101 which is large so critical value is 1.98397

$\begin{aligned}& =\left(\bar{X}-\sqrt{\frac{S}{n}} \times t_{(n-1, \alpha / 2)}, \bar{X}+\sqrt{\frac{S}{n}} \times t_{(n-1, \alpha / 2)}\right) \\& =\left(24.2376-\sqrt{\frac{8.9830}{101}} \times 1.98397,24.2376+\sqrt{\frac{8.9830}{101}} \times 1.98397\right) \\& =(23.6459,24.8293)\end{aligned}$

To learn more about statistics visit:brainly.com/question/29093686

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4 0

7 months ago

Please help me no one answers my last few questions<br> #6

Alex787 [66]

Answer:

$[f(x)]^2-g(x) = 5x^2-13x-8$

Step-by-step explanation:

Given

$f(x) = 2x-2\\g(x) = -x^2+5x+12$

To find: $[f(x)]^2-g(x)$

First of all the square of first function f(x) will be found and then second function g(x) will be subtracted from the square of first function

Squaring the first function

$[f(x)]^2 = (2x-2)^2\\Using\ (a-b)^2 = a^2-2ab+b^2\\\[f(x)]^2 = (2x)^2-2(2x)(2)+(2)^2\\= 4x^2-8x+4$

Now subtracting g(x) from [f(x)]^2

$[f(x)]^2-g(x) = (4x^2-8x+4)-(-x^2+5x+12)\\\[f(x)]^2-g(x) = 4x^2-8x+4+x^2-5x-12$

Combining alike terms

$[f(x)]^2-g(x) = 4x^2+x^2-5x-8x+4-12\\\[f(x)]^2-g(x) = 5x^2-13x-8$

Hence,

Subtracting g(x) from the square of f(x) gives us:

$[f(x)]^2-g(x) = 5x^2-13x-8$

4 0

2 years ago

In a survey of students, 60% were in high school and 40% were in middle school. Of the high school students, 30% had visited a f

MrMuchimi

Answer:

18%

Step-by-step explanation:

60 percent are in high school, of those 60 percent, 30 percent visited a foreign country

P ( high school and foreign country) = 60% * 30 %

=.60*.30

.18

18%

5 0

2 years ago