2 years ago

In a random sample of 1,000 exams, the average score was 500 points with a standard deviation of 80 points.

Mathematics

1 answer:

bagirrra123 [75]2 years ago

5 0

90% c.I. is given by

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What is the 5% of 300

garik1379 [7]

15
300*5/100 =15
That's all

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3 years ago

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2/3 is what percent of 1/4?

saveliy_v [14]

So if we take 1/4 to be the 100%, what is 2/3 in percentage off of it then?

$\bf \begin{array}{ccll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
\frac{1}{4}&100\\\\
\frac{2}{3}&p
\end{array}\implies \cfrac{\frac{1}{4}}{\frac{2}{3}}=\cfrac{100}{p}\implies \cfrac{1}{4}\cdot \cfrac{3}{2}=\cfrac{100}{p}\implies \cfrac{3}{8}=\cfrac{100}{p}
\\\\\\
p=\cfrac{8\cdot 100}{3}\implies p=\cfrac{800}{3}\implies p=266\frac{2}{3}\implies p\approx 266.\overline{66}$

yes, is a large value, because 2/3 is indeed larger than 1/4, more than twice as large.

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3 years ago

Math help me please n

BARSIC [14]

Answer:

Step-by-step explanation:

21x1/12=1.75 cm

1.75x10=17.55 mm

17.55 mm

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2 years ago

Help pretty please .w.

sineoko [7]

I don’t know what that is it’s probably 9999999

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5 cups to 8 cups <br> identify the percent

KIM [24]

5/8=x/100
x=(5/8)(100)=500/8
x=62.5%

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2 years ago