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3 years ago

Find the answer in simplest form 3/7x2/3

Mathematics

1 answer:

Grace [21]3 years ago

8 0

Answer:

7 6/7 or 7.8571429

Step-by-step explanation:

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A proportional relationship is a relationship between equivalent ratios. Imagine that ice cream costs $2 per scoop. If you get o

Troyanec [42]

Answer:

B. An athlete does 10 push-ups <u>for every</u> mile she runs.

Step-by-step explanation:

10/1 -> 20/2 -> 30/3

4 0

3 years ago

Help me please I need good grades!

Andrew [12]

Its yes. 17 over 3 equals to 68 over 12.

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3 years ago

The ratio of girls to boys on the Husky

NemiM [27]

Answer:

Step-by-step explanation:

2+3=5

105÷5=21

21×3=63

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3 years ago

The weights of ice cream cartons are normally distributed with a mean weight of 1313 ounces and a standard deviation of 0.50.5 o

asambeis [7]

Answer:

a) We are interested on this probability

$P(X>13.17)$

And the best way to solve this problem is using the normal standard distribution and the z score given by:

$z=\frac{x-\mu}{\sigma}$

If we apply this formula to our probability we got this:

$P(X>13.17)=P(\frac{X-\mu}{\sigma}>\frac{13.17-\mu}{\sigma})=P(Z>\frac{13.17-13}{0.5})=P(z>0.34)=0.367$

b) $P(\bar X >13.17)$

The new z score is given by:

$z =\frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}$

And replacing we got:

$P(\bar X >13.17)=P(Z> \frac{13.17-13}{\frac{0.5}{\sqrt{36}}})= P(Z>2.04) =0.0207$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Part a

Let X the random variable that represent the weights of a population, and for this case we know the distribution for X is given by:

$X \sim N(13,0.5)$