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3 years ago

If the mean of a given dataset is

Mathematics

2 answers:

ser-zykov [4K]3 years ago

8 0

Your answer is C, 5 to 9.

So, the interval 3.1 ≤ x ≤ 7.0 is actually between one standard deviation below the mean and 2 standard deviations above the mean. In normally distributed data, about 34 % of the values lie between the mean and one standard deviation below the mean, and 34 % between the mean and one standard deviation above the mean.

<em>Sure hope this helps you</em>. :)

Nesterboy [21]3 years ago

5 0

Answer:

Step-by-step explanation:

about 68% of the data lies within one standard deviation of the mean. That is, between

so 7 + 2 = 9

7 - 2 = 5

so answer C is the most appropriate being 5 to 9

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the volume of metal in a scale model of a metal high tension tower is 54 cm cubed. The scale used was 1:50. it required 50 mm of

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Answer:

6,750,000 cm³ = 6.75 m³

Step-by-step explanation:

a scale version means that the ratio of every dimension of scale vs. real object is 1/50.

volume is created by multiplying 3 dimensions.

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2 years ago

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serious [3.7K]

Answer:

318.2 ml

Step-by-step explanation:

Jamie has 100 ml of a 50% isopropyl alcohol solution.

She wants to prepare a solution of 85% by adding 96% solution of isopropyl alcohol solution.

Let the amount of 96% solution required = x ml

Final amount of 85% isopropyl alcohol solution = (100 + x) ml

Therefore, equation for this situation will be,

100 × (50%) + (x) × (96%) = (100 + x) × (85%)

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x = $\frac{35}{0.11}$

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