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o-na [289]
3 years ago
6

Find the Range of the following set of data. (Round to the

Mathematics
1 answer:
loris [4]3 years ago
5 0

Step-by-step explanation:

put them in least to greatest, so that would be: 0,0,1,1,1,1,2,3,3,6,8,7,8, then do the greatest minus the lowest: 8-0=8

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You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the
Vesna [10]

Answer:

A sample size of at least 1,353,733 is required.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , 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 .

The margin of error is:

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

98% confidence level

So \alpha = 0.02, z is the value of Z that has a pvalue of 1 - \frac{0.02}{2} = 0.99, so Z = 2.327.  

You would like to be 98% confident that you esimate is within 0.1% of the true population proportion. How large of a sample size is required?

We need a sample size of at least n.

n is found when M = 0.001.

Since we don't have an estimate for the proportion, we use the worst case scenario, that is \pi = 0.5

So

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

0.001 = 2.327\sqrt{\frac{0.5*0.5}{n}}

0.001\sqrt{n} = 2.327*0.5

\sqrt{n} = \frac{2.327*0.5}{0.001}

(\sqrt{n})^{2} = (\frac{2.327*0.5}{0.001})^{2}

n = 1353732.25

Rounding up

A sample size of at least 1,353,733 is required.

5 0
3 years ago
Choose Yes Or No To Tell if the fraction 4/9 will make each equation True.
BlackZzzverrR [31]

Answer:

true, true, false, true

Step-by-step explanation:

(4/9)*63=28

(4/9)*18=8

(4/9)*96=42.666667

(4/9)*36=16

5 0
2 years ago
3) Caleb's cellphone says that it is 20% charged. He has 45
ra1l [238]

Answer:

225 minutes

Step-by-step explanation:

45 min = 20% = 20/100

20 x 5 = 100

45 x 5 = 225

3 0
3 years ago
Solve for x using basic trigonometric ratios.
yuradex [85]
Sine 35 degrees = x / 20

x = sine 35 degrees * 20

x = .57358 * 20

x = 11.4716


8 0
3 years ago
Help asap number 48!!!
yulyashka [42]

Answer:

cant answer a test sry

Step-by-step explanation:

5 0
3 years ago
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