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fredd [130]
3 years ago
15

What is the percentage chance of a solution 150 g active ingredient in a total of 1000 mL of solution

Mathematics
1 answer:
Andrej [43]3 years ago
4 0

Answer:6.6666666667

Step-by-step explanation:just divided it

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The value of 9 in 456,790.
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The value of 9 there is 90 since it is in the tens place.
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Right triangle ABC is isosceles and point M is the midpoint of the hypotenuse.
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The population standard deviation for the temperature of beers found in Scooter's Tavern is 0.26 degrees. If we want to be 90% c
siniylev [52]

Answer:

19 beers must be sampled.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.9}{2} = 0.05

Now, we have to find z in the Z-table as such z has a p-value of 1 - \alpha.

That is z with a pvalue of 1 - 0.05 = 0.95, so Z = 1.645.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

The population standard deviation for the temperature of beers found in Scooter's Tavern is 0.26 degrees.

This means that \sigma = 0.26

If we want to be 90% confident that the sample mean beer temperature is within 0.1 degrees of the true mean temperature, how many beers must we sample?

This is n for which M = 0.1. So

M = z\frac{\sigma}{\sqrt{n}}

0.1 = 1.645\frac{0.26}{\sqrt{n}}

0.1\sqrt{n} = 1.645*0.26

\sqrt{n} = \frac{1.645*0.26}{0.1}

(\sqrt{n})^2 = (\frac{1.645*0.26}{0.1})^2

n = 18.3

Rounding up:

19 beers must be sampled.

7 0
2 years ago
What is 90 divided by 12???? <br> pls help i need to get my grades up
Andrew [12]

Answer:

7.5

Step-by-step explanation:

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5 0
2 years ago
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Complete the equation and tell which property you used.<br> 0+___=91
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The answer is 91 and the property used is the Identity Property of Addition.
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3 years ago
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