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mr Goodwill [35]
4 years ago
11

A distribution of numbers has the following five-number summary: 13.7, 24.5, 38.9, 50.0, 73.2 True or False? These numbers can b

e used to calculate the standard deviation of the distribution. A. True B. False
Mathematics
2 answers:
Oxana [17]4 years ago
6 0

Answer:

False

Step-by-step explanation:

Given that a distribution of numbers has the following five-number summary: 13.7, 24.5, 38.9, 50.0, 73.2

These five numbers are known as minimum, I quartile, Median, III quartile and max respectively.

This gives an idea about the scatter of data on either side of median, the interquartile range, and also help to find outliers if any.

But std deviation is the square root of variance. Variance is the average of sum of squares of deviations from the mean.

Hence without knowing mean and each entry just with five number summary we may not be able to find out the standard deviation.

DIA [1.3K]4 years ago
3 0

Answer:

the answer is false

Step-by-step explanation:

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3 years ago
The figure below shows a tent with wires attached to help stabilize it. The length of each wire is 8 feet greater than the dista
Anestetic [448]

Answer:

The length of 2 wires are 13 feet and 12 feet [i don't know if the 3rd side is a wire, if so, the length is 5 feet]

Step-by-step explanation:

<em>The image of the tent is attached.</em>

<em />

As we can see, it creates a right triangle with "x+8" side being the hypotenuse of the triangle.

The pythagorean theorem tells us:

Hypotenuse^2 = Leg^2 + Leg^2

THe hypotenuse is "x+8", the two legs are "x" and "x+7" respectively. Let's solve for x:

(x+8)^2=(x+7)^2+x^2

We expand and solve for x:

(x+8)^2=(x+7)^2+x^2\\x^2+16x+64=x^2+14x+49+x^2\\x^2+16x+64=2x^2+14x+49\\x^2-2x-15=0\\(x-5)(x+3)=0\\x=5,-3

Length can't be negative, so x = 5.

Hence, the 3 sides of the triangle are:

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x + 8 = 13

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The length of 2 wires are 13 feet and 12 feet

8 0
3 years ago
The ratio of peaches to plums is 3:8. If there are 99 fruits how many plums are there?
Illusion [34]
3+8=11
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99=11 units
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plums=8 units
8*9=72
72 plums
8 0
3 years ago
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