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4 years ago

Write the fraction as a percent: 7/10. (Simplify your answer)

Mathematics

2 answers:

MAVERICK [17]4 years ago

5 0

For a percentage, the denominator should be 100 so,

7×10/10×10
=70/100=70%

answer=70%
hope this helps........

lbvjy [14]4 years ago

4 0

7/10 is equal to 70% percent of something, which could also be 7% to a quantity 1/10 the original size.

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Step-by-step explanation:

Let X = number of phone calls that are wrong numbers.

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Now, for the sample proportion to differ from the population proportion by 3% the value of the sample proportion should be:

$\hat p-p=0.03\\\hat p-0.08=0.03\\\hat p=0.11$ $\hat p-p=-0.03\\\hat p-0.08=-0.03\\\hat p=0.05$

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$P(X\leq 21)=\sum\limits^{21}_{x=0}{{421\choose x}0.08^{x}(1-0.08)^{421-x}}=0.0106$

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$X=np=421\times 0.11=46.31\approx47$

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$P(X\geq 47)=\sum\limits^{471}_{x=47}{{421\choose x}0.08^{x}(1-0.08)^{421-x}}=0.0135$

Then the probability that the sample proportion differ from the population proportion by greater than 3% is:

$P(\hat p-p>0.03)=P(X\leq 21)+P(X\geq 47)=0.0106+0.0135=0.0241$

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