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goldfiish [28.3K]
3 years ago
8

MARK BRAINLIESTTTTTT

Mathematics
1 answer:
Gre4nikov [31]3 years ago
8 0

Answer:

i think its c hope it helps

Step-by-step explanation:

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A tree is currently 10 feet tall and grows 2 feet per year.
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Answer:

10+2x

the tree would be 40 feet tall in 15 years.

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3 years ago
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The ratio of the numerator to the denominator of a fraction is 2 to 3. If both the numerator and the denominator are increased b
lesya692 [45]
N/d = 2/3   ------------------->  3n = 2d

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A computer manufacturing company has sent a mail survey to 2,800 of its randomly selected customers that have purchased a new la
vodka [1.7K]

Answer:

The 96% confidence interval for the population proportion of customers satisfied with their new computer is (0.77, 0.83).

Step-by-step explanation:

We have to calculate a 96% confidence interval for the proportion.

We consider the sample size to be the customers that responded the survey (n=800), as we can not assume the answer for the ones that did not answer.

The sample proportion is p=0.8.

p=X/n=640/800=0.8

The standard error of the proportion is:

\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.8*0.2}{800}}\\\\\\ \sigma_p=\sqrt{0.0002}=0.014

The critical z-value for a 96% confidence interval is z=2.054.

The margin of error (MOE) can be calculated as:

MOE=z\cdot \sigma_p=2.054 \cdot 0.014=0.03

Then, the lower and upper bounds of the confidence interval are:

LL=p-z \cdot \sigma_p = 0.8-0.03=0.77\\\\UL=p+z \cdot \sigma_p = 0.8+0.03=0.83

The 96% confidence interval for the population proportion is (0.77, 0.83).

4 0
3 years ago
Solve for p<br>6 = 3 + 3p<br>P=​
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Answer:

1

Step-by-step explanation:

6=3+3p

6-3=3p

3=3p

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7 0
3 years ago
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How would a 75% achievement grade on a test affect a person with a 90 average
Sphinxa [80]

Well, let's see how it'll effect your grade...

75% ÷ 90% = 0.83

0.83 x 100 = 83%

It would effect your grade by 7 percent, lowering it to 83%

I hope this helps!

8 0
3 years ago
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