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Ivan
2 years ago
6

A study by the department of education of a certain state was trying to determine the mean SAT scores of the graduating high sch

ool seniors. The study found that the mean SAT score was 516 with a margin of error of 20. Write a confidence interval for the true mean SAT score of the graduating high school seniors.
Mathematics
1 answer:
natali 33 [55]2 years ago
7 0

A confidence interval for the true mean SAT score of the graduating high school seniors will be (496; 536)

<h3>What is a confidence interval?</h3>

A confidence interval (CI) is a range of estimates for an unknown parameter in frequentist statistics.

Mean score ± margin of error

Margin of Error = 20

Mean SAT score = 516

Hence,the confidence interval will be:-

=  516   ±  20

Lower boundary  =  516   -   20  = 496

Upper boundary  =  516   +  20  =  536

To know more about confidence intervals follow

brainly.com/question/16974109

#SPJ1

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SCORPION-xisa [38]
32/1 divided by 1/6

Use "Keep, Change, Flip"
32/1 * 6/1

The answer is 192
3 0
3 years ago
Sandy is upgrading her Internet service. Fast Internet charges $40 for installation and $52.45 per month.
Orlov [11]

Answer:

After 8 months of internet use both the connection will cost the same.

Step-by-step explanation:

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Quick Internet has free installation but charges $57.45 per month.

So, the total cost after using x months of the internet in Quick Internet will be

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Therefore, after 8 months of internet use both the connection will cost the same. (Answer)

7 0
3 years ago
What is the area, in square units, of the parallelogram shown below? A parallelogram ABCD is shown with height 7 units and base
enot [183]

<u><em>Answer:</em></u>

35 square units

<u><em>Explanation:</em></u>

<u>Area of parallelogram is calculated as follows:</u>

Area = base * height square units

<u>In the given question, we have:</u>

base = 5 units

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<u>Substitute with the givens in the above equation to get the area:</u>

Area of parallelogram = 5 * 7 = 35 square units

Hope this helps :)

3 0
3 years ago
Read 2 more answers
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damaskus [11]

Answer:

Answer = 12 x^{-5}

Step-by-step explanation:

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6 0
3 years ago
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geniusboy [140]

Answer:

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6 1
2 years ago
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