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labwork [276]
2 years ago
11

Doses anyone know the answer?

Mathematics
1 answer:
wlad13 [49]2 years ago
7 0

Answer:

Step-by-step explanation:

Symmetric since it goes up and back down the same amount of dots.

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A manufacturer of college textbooks is interested in estimating the strength of the bindings produced by a particular binding ma
IrinaVladis [17]

Answer:

538 books should be tested.

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{1-0.99}{2} = 0.005

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

So it is z with a pvalue of 1-0.005 = 0.995, so z = 2.575

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.

How many books should be tested to estimate the average force required to break the binding to within 0.08 lb with 99% confidence?

n books should be tested.

n is found when M = 0.08

We have that \sigma = 0.72

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

0.08 = 2.575*\frac{0.72}{\sqrt{n}}

0.08\sqrt{n} = 2.575*0.72

\sqrt{n} = \frac{2.575*0.72}{0.08}

(\sqrt{n})^{2} = (\frac{2.575*0.72}{0.08})^{2}

n = 537.1

Rounding up

538 books should be tested.

6 0
3 years ago
What is the g.c.f of 18x15
babunello [35]

Answer:

3

Step-by-step explanation:

List all possible factors of each number.  The GCF will be the largest number they both share

Factors of 18:   1, 2, 3, 6, 18

Factors of 15:   1, 3, 5, 15

The largest number they both share is 3, so that is the GCF

4 0
3 years ago
Lisa has 5/8 pound of grapes. 3/4 of the grapes are green. The rest are purple. She divides the purple grapes equally among 10 f
Aleksandr-060686 [28]

if 3/4 of the grapes are green, than 1/4 are purple.

5/8*1/4=5/32

5/32 *1/10= 1/64

Each friend gets 1/64th of a pound of grapes

3 0
3 years ago
Can someone please HELP ME!!
IRISSAK [1]

Volume of a cone = PI x r^2 x h/3

Volume = PI x 5^2 x 9/3

Volume = 235.62 cubic cm.

Volume of a block of wax = L x W x H

Volume = 2 x 4 x 3 = 24 cubic cm.

Total number of blocks = Volume of cone / volume of blocks:

235.62 / 24 = 9.82

Round up to 10.

They will need 10 blocks.

4 0
3 years ago
The table below represents the number of math problems Jana completed as a function of the number of minutes since she began doi
Sonbull [250]
It's a nonlinear because the x and y values are not increasing at the same ratio each time. This would be an example of a linear function:
x l 1 2 3  4   5   6
y l 3 6 9 12 15 18

As x increases by 1, y increases by a multiple of 3
5 0
3 years ago
Read 2 more answers
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