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Dvinal [7]
3 years ago
8

Who walks at a faster rate: someone who walks 60 feet in 10 seconds or someone who takes 5 seconds to walk 25 feet?

Mathematics
1 answer:
g100num [7]3 years ago
7 0
Someone who walk 60 feet in 10 second is the one who walk faster because when you take some who walk 25 feet in 5 second is not gonna doing it , let see 5+5= 10 25 + 25 = 50 So you already see there is 10 second left Hope you understand it , let me know if my help is not a waste of time
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natima [27]

Answer:

b. It will decrease by a factor of 2

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence interval 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The lower end of the interval is given by:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}}

The upper end of the interval is given by:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}}

The length of the interval is the subtraction of the upper end by the lower end, so it is:

L = 2z\sqrt{\frac{\pi(1-\pi)}{n}}

This means that the length is inverse proportional to the square root of the size of the sample.

So, if the sample size is multiplied by 4, the length of the interval is going to decrease by a factor of 2.

4 0
3 years ago
Simplify the expression. 8(s-1)
TEA [102]

Answer:

8s-8

Step-by-step explanation:

Use the distributive property: #(a-b) = #*a - #*b. In this case 8s - 8.

Hope it helps!

6 0
3 years ago
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Which term describes the slope of the line below?
SashulF [63]

Answer:

B. Zero

Step-by-step explanation:

The slope of the line is in the the first two quadrants and is horizontal, meaning it has zero slope.

7 0
1 year ago
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Ulleksa [173]
I thick the answer is c
8 0
3 years ago
Pls somone help me plssssss
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Answer:

a

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Happy new years!

7 0
2 years ago
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