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4 years ago

Is one half equal to 7/12

Mathematics

2 answers:

Nataly [62]4 years ago

8 0

No, 7/12 would not be 1/2. seven can go into 14 twice though. So 7/14 = 1/2

yuradex [85]4 years ago

3 0

We can chang efractions to compare them by multiplying them by 1 or x/x where x=x so

1/2=7/12?
make bottom numbers equal
2 times what=12
divide 2
what=6

1/2 times 6/6=6/12
6/12=7/12
6=7
false

so therefor it does NOT equal 7/12

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

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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:

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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

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And we can use the z score formula given by:

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And replacing we got:

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