A soccer field is 100 meters long. What could the length in yards

Mathematics

2 answers:

Zolol [24]3 years ago

6 0

Answer:

109 yards.

Step-by-step explanation:

maria [59]3 years ago

4 0

Answer:

the answer would be 109.36133. I hope i helped u out.

Step-by-step explanation:

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In September 2011, Gallup surveyed 1,004 American adults and asked them whether they blamed Barack Obama a great deal, a moderat

Alexus [3.1K]

Answer:

The 99% confidence interval for the proportion of all American adults who blame Barack Obama a great deal or a moderate amount for U.S. economic problems is (0.4894, 0.5706)..

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 level of $1-\alpha$ , 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 $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

$n = 1004, \pi = 0.53$

99% confidence level

So $\alpha = 0.01$ , z is the value of Z that has a pvalue of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.53 - 2.575\sqrt{\frac{0.53*0.47}{1004}} = 0.4894$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.53 - 2.575\sqrt{\frac{0.53*0.47}{1004}} = 0.5706$

The 99% confidence interval for the proportion of all American adults who blame Barack Obama a great deal or a moderate amount for U.S. economic problems is (0.4894, 0.5706)..

3 0

2 years ago

Find f(-2) if f(x) = 4x + 8

zzz [600]

Answer:

Step-by-step explanation:

Use the hint lol
Step 1: Plug in -2 into the equation.
f(-2) = 4(-2) + 8

Step 2: Multiply
f(-2) = -8 + 8

Step 3: Add

f(-2) = 0

5 0

2 years ago