In a drawer there are 10 white, 8 black, and

Mathematics

2 answers:

SOVA2 [1]2 years ago

6 0

Answer:

7 out of 28

Step-by-step explanation:

kirza4 [7]2 years ago

4 0

Answer:

Step-by-step explanation:

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Choose the ratio that you would use to convert 0.5 miles to yards. Remember that there are 1,760 yards in one mile.

zavuch27 [327]

Hello there, and thank you for posting your question here on brainly.

So, you need to find the ratio of the following to figure out which one is how to find how many yards are in half a mile.

What would you need to do to find out how? Divide it.

So you'd divide it by what? 2.

Which is the result? C. 880 yd / 1 mi

Hope this helped!! ☺♥

8 0

3 years ago

Read 2 more answers

Health insurers are beginning to offer telemedicine services online that replace the common office visit. A company provides a v

Veronika [31]

Answer:

$\text {CI} = (60.54, \: 81.46)\\\\$

Therefore, we are 95% confident that actual mean savings for a televisit to the doctor is within the interval of ($60.54 to $81.46)

Step-by-step explanation:

Let us find out the mean savings for a televisit to the doctor from the given data.

Using Excel,

=AVERAGE(number1, number2,....)

The mean is found to be

$\bar{x} = \$71$

Let us find out the standard deviation of savings for a televisit to the doctor from the given data.

Using Excel,

=STDEV(number1, number2,....)

The standard deviation is found to be

$s = \$ 22.35$

The confidence interval is given by

$\text {confidence interval} = \bar{x} \pm MoE\\\\$

Where the margin of error is given by

$$ MoE = t_{\alpha/2}(\frac{s}{\sqrt{n} } ) $ \\\\$

Where n is the sample of 20 online doctor visits, s is the sample standard deviation and $t_{\alpha/2}$ is the t-score corresponding to a 95% confidence level.