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3 years ago

The window in mr. Rodriguez’s attic is in two parts, each shaped like a trapezoid and each with identical dimensions

Mathematics

1 answer:

True [87]3 years ago

8 0

easy way...

multiply Base x height (for both)

30 inches x 12 inches = 360 in

16 in. x 12 in = 192 in.

then add both

360 + 192 = 552

A=552 in²

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-Dominant- [34]

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3 years ago

New ear buds cost $48. There is a 10% discount. What is the new cost?

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2 years ago

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A scientist claims that 6% of viruses are airborne. (a) If the scientist is accurate, what is the probability that the proportio

soldi70 [24.7K]

Answer:

Probability that the proportion of airborne viruses in a sample of 529 viruses would be greater than 8% is 0.9545.

Step-by-step explanation:

For the given population the distribution of air-borne viruses is given as 6%. Now for this the value of Z score is given as

$Z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}}$

Here

$\hat{p}$ is the sample measure which is 8% or 0.08
p is the population measure which is 6% or 0.06
n is the number of samples which is 529

So the Z score is given as

$Z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}}\\Z=\dfrac{0.08-0.06}{\sqrt{\dfrac{0.08(1-0.08)}{529}}}\\Z=\dfrac{0.02}{\sqrt{\dfrac{0.08(0.92)}{529}}}\\Z=\dfrac{0.02}{\sqrt{\dfrac{0.0736}{529}}}\\Z=\dfrac{0.02}{0.01179}\\Z=1.6955$

For this the score, the value of probability is calculated from the table as below:

$P(\hat{p}>0.08)=p(Z>1.6955)\\=1-p(Z$

Here value of p(Z<-1.6955) is given as 0.0455

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2 years ago

I'm a little confused on how to answer #2

scoundrel [369]

Ten is to the 6th power so there are 6 zeroes.

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3 years ago