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7nadin3 [17]
3 years ago
7

Can u help me with this or I’m going to get in trouble !

Mathematics
1 answer:
Alchen [17]3 years ago
5 0

Answer:

Step-by-step explanation:

d

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Find the perimeter of a polygon with sides 11ft 7ft 18ft 22ft 14ft and 23.5ft
allsm [11]

Perimeter of a polygon is equal to sum of all sides of the polygon

Sides of the polygons are 11 ft, 7 ft, 18 ft, 22 ft, 14 ft and 23.5 ft

Sum of all sides of the polygon is given by = 11 ft + 7 ft + 18 ft + 22 ft + 14 ft + 23.5 ft

= 95.5 ft

Perimeter of a polygon = 95.5 ft

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3 years ago
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Kyles net worth is 500
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Banking fees have received much attention during the recent economic recession as banks look for ways to recover from the crisis
alex41 [277]

Answer:

a) The 95% confidence interval to estimate the average fee for the population is between $11.65 and $12.79

b) $0.57

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.

So it 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{1.86}{\sqrt{41}} = 0.57

So the answer for b) is $0.57.

The lower end of the interval is the sample mean subtracted by M. So it is 12.22 - 0.57 = $11.65

The upper end of the interval is the sample mean added to M. So it is 12.22 + 0.57 = $12.79

The 95% confidence interval to estimate the average fee for the population is between $11.65 and $12.79

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3 years ago
8. Duane packed some books in a box shaped like a rectangular prism. The volume of
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The answer is D_______

3 0
2 years ago
What’s the answer??? Pls help asap this is due tonight
Katarina [22]

Answer:

30

Step-by-step explanation:

5(3) - 3( - 5)

15  + 15

30

<em>hope</em><em> </em><em>it</em><em> </em><em>was</em><em> </em><em>helpful</em><em>.</em><em> </em><em>any</em><em> </em><em>confusion</em><em> </em><em>u</em><em> </em><em>may</em><em> </em><em>ask</em>

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2 years ago
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