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3 years ago

13

For a confidence level of 88%, find the critical value for a normally distributed variable. The sample mean is normally distribu

ted if the population standard deviation is known.

1 answer:

Elanso [62]3 years ago

8 0

Answer:

z = ± 0.772193214

Step-by-step explanation:

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If one cup of vinegar with 1 gallon of water to make a cleaning solution. The ratio of vinegar to water is 1 to 16. How many cup

mojhsa [17]

If one cup of vinegar with 1 gallon of water to make a cleaning solution. The ratio of vinegar to water is 1 to 16. Question: How many cups of water should be mixed with 1/4 cup of vinegar to make the cleaning solutionRatio, formula and solutions:=> ratio of vinegar is to water = 1 : 16now, there's a 1/4 cup of vinegar, how much water will we need to be able to make a cleaning solutions.=> 16 / 4 <span>=> 1/4 : 4 or .25 : 4 </span>

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3 years ago

Is -2 a solution of the inequality -2x + 5 > 9?<br> A. yes<br> | B. no

kramer

Answer:B

Step-by-step explanation:

-2x+5>9

-2x>4

-x>2

x<-2

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3 years ago

A. Use composition to prove whether or not the functions are inverses of each other. B. Express the domain of the compositions u

Kryger [21]

Given: $f(x) = \frac{1}{x-2}$

$g(x) = \frac{2x+1}{x}$

A.)Consider

$f(g(x))= f(\frac{2x+1}{x} )$

$f(\frac{2x+1}{x} )=\frac{1}{(\frac{2x+1}{x})-2}$

$f(\frac{2x+1}{x} )=\frac{1}{\frac{2x+1-2x}{x}}$

$f(\frac{2x+1}{x} )=\frac{x}{1}$

$f(\frac{2x+1}{x} )=1$

Also,

$g(f(x))= g(\frac{1}{x-2} )$

$g(\frac{1}{x-2} )= \frac{2(\frac{1}{x-2}) +1 }{\frac{1}{x-2}}$

$g(\frac{1}{x-2} )= \frac{\frac{2+x-2}{x-2} }{\frac{1}{x-2}}$

$g(\frac{1}{x-2} )= \frac{x }{1}$

$g(\frac{1}{x-2} )= x$

Since, $f(g(x))=g(f(x))=x$

Therefore, both functions are inverses of each other.

B.

For the Composition function $f(g(x)) = f(\frac{2x+1}{x} )=x$

Since, the function $f(g(x))$ is not defined for $x=0$ .

Therefore, the domain is $(-\infty,0)\cup(0,\infty)$

For the Composition function $g(f(x)) =g(\frac{1}{x-2} )=x$

Since, the function $g(f(x))$ is not defined for $x=2$ .

Therefore, the domain is $(-\infty,2)\cup(2,\infty)$

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3 years ago

Danny bought 5 Pes to $0.30 each six pencils at $0.25 since in The Notebook for $3 and the tax is $8 how much did he pay will ma

Paha777 [63]

The answer is 14. This is because 0.30 multiplied by 5 is 1.5. Then 6 multiplied by 0.25 is 1.5 as well. Adding these two together is 3. 3 plus 3 for the notebook is 6. Than 6 plus 8 dollar tax is 14 dollars.

6 0

3 years ago

?? anyone know thank you

lana66690 [7]

Answer:

19/20 is the correct answer

7 0

2 years ago

Read 2 more answers