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2 years ago

7

Each large rectangle below represents one whole. What percent is represented by the shaded area?

2 answers:

shutvik [7]2 years ago

5 0

Answer:

Step-by-step explanation:

Hello

Each large rectangle below represents one whole. What percent is represented by the shaded area?

9/10 = (9 x 10)/(10 x 10) = 90/100 = 90%

kolezko [41]2 years ago

5 0

Answer:

it is 180%

Step-by-step explanation:

each rectangle has 5 spaces. 100/5 is 20. as we all know, if all the spaces are filled, it equals 100%. but, the other rectangle has only 4 spaces filled. so you do 4*20 because 100/5 is 20 and 4*20 equals 80, or 80%. then you add the 80% and the 100% and you get 180%

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Step-by-step explanation:

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Soloha48 [4]

Answer:

a) $\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

And replacing we got:

$\bar X \sim N(\mu=25, \frac{4}{\sqrt{30}}= 0.730)$

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And using the normal standard distribution table and the complement rule we got:

$P(z>2.739) =1- P(z$

Step-by-step explanation:

From the info given if we define the random variable X as "amount of saturated fat in a daily serving of a particular brand of breakfast cereal " we know that the distribution of X is given by:

$X \sim N(\mu =25, \sigma =4)$

Part a

For this case the sample size would be n =30 and then the distribution for the sample mean would be given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

And replacing we got:

$\bar X \sim N(\mu=25, \frac{4}{\sqrt{30}}= 0.730)$

Part b

We want to find this probability:

$P(\bar X >27)$

And we can use the z score formula given by:

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And replacing we got:

$z =\frac{27-25}{\frac{4}{\sqrt{30}}}= 2.739$

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Step-by-step explanation:

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