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2 years ago

Select the correct choice below and, if necessary, fill in the answer box to complete your choice.

Mathematics

2 answers:

Veseljchak [2.6K]2 years ago

8 0

Answer:

5/6

Step-by-step explanation:

Slope equals y 2 minus y 1 divided by x 2 minus x1

1-(-4)/4-(-2)

5/6

adoni [48]2 years ago

8 0

It 5/6 hope it helps you

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Susan is using rope to make doormats she uses 48 inches of rope to make each doormat how many complete doormats can she make wit

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3 years ago

Read 2 more answers

Is 0.05 greater than 0.083

Harrizon [31]

Answer:

no 0.05 is smaller then 0.083

Step-by-step explanation:

6 0

2 years ago

Please help! Will give brainliest! Option choices are 2, -5. 11

netineya [11]

Answer:

Step-by-step explanation:

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3 years ago

1. If a = -1 , the value of3a + 1 is

erastovalidia [21]

Answer:

$f(a) = 3a + 1 \\ Now,\: a = - 1 \\ f( - 1) = 3( - 1) + 1 \\ f( - 1) = - 3 + 1 \\ \boxed{ f( - 1) = - 2}$

Therefore, -2 is the right answer.

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2 years ago

Suppose that a market research firm is hired to estimate the percent of adults living in a large city who have cell phones. 500

Alborosie

Answer:

The 95% confidence interval estimate for the true proportion of adults residents of this city who have cell phones is (0.81, 0.874).

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:

$n = 500, \pi = \frac{421}{500} = 0.842$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.842 - 1.96\sqrt{\frac{0.842*0.158}{500}} = 0.81$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.842 + 1.96\sqrt{\frac{0.842*0.158}{500}} = 0.874$

The 95% confidence interval estimate for the true proportion of adults residents of this city who have cell phones is (0.81, 0.874).

6 0

3 years ago

Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice.

Select the correct choice below and, if necessary, fill in the answer box to complete your choice.