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Fudgin [204]
3 years ago
8

The measured length is 3cm. The actual length is 3.4 cm. Find the percent error

Mathematics
1 answer:
Komok [63]3 years ago
7 0

Answer:

I think it is 100

Step-by-step explanation:

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Please I need help for number 6 for brainlest and answer ! And show your work on how you got it
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Answer:

Step-by-step explanation:

inverse variation. if value of x increase, y value decrease.

For example,

If x=10;   y =1/10 = 0.1

If x =100 ;  y = 1/100 = 0.01

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A random sample of 35 business students required an average of 50.7 minutes to complete a statistics exam. Assume that the popul
love history [14]

Answer:

(47.3, 54.1)

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1 - \alpha.

That is z with a pvalue of 1 - 0.025 = 0.975, so Z = 1.96.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.96\frac{10.4}{\sqrt{35}} = 3.4

The lower end of the interval is the sample mean subtracted by M. So it is 50.7 - 3.4 = 47.3

The upper end of the interval is the sample mean added to M. So it is 50.7 + 3.4 = 54.1

The answer is (47.3, 54.1).

6 0
3 years ago
A car travels at an average speed of 52 miles per hour. How long does it take to travel 234 miles
mars1129 [50]
Speed = distance/time

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7 0
3 years ago
The ones digit of the cube of the number 144
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Answer:

5

Step-by-step explanation:

∛144 = 5.24148278842

5 is in the ones digit of the cube root of 144.

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