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k0ka [10]
3 years ago
7

HELPPP KE PJEASE. ASAPPPP ITS FOR A QUIZZZ

Mathematics
1 answer:
san4es73 [151]3 years ago
8 0
=(1/2) * 2 * 3.2 + (1/2) *2 * 3.2 + (1/2) * 2 * 4 + (1/2) * 2 * 4
= 2 * 3.2 + 2 * 4
= 2 * (3.2 + 4)
= 2 * 7.2
= 14.4 sq feet
2 * 14.4 = 28.8 sq feet
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N = 9
g100num [7]

Answer:

The <em>p</em>-value is 0.809.

Step-by-step explanation:

In this case we need to perform a significance test for the standard deviation.

The hypothesis is defined as follows:

<em>H</em>₀: <em>σ</em>₀ = 4 vs. <em>Hₐ</em>: <em>σ</em>₀ ≤ 4

The information provided is:

<em>n</em> = 9

<em>s</em> = 3

Compute the Chi-square test statistic as follows:

\chi^{2}=\frac{(n-1)s^{2}}{\sigma_{0}^{2}}

     =\frac{(9-1)\cdot (3)^{2}}{(4)^{2}}\\\\=\frac{8\times 9}{16}\\\\=4.5

The test statistic value is 4.5.

The degrees of freedom is:

df = n - 1

   = 9 - 1

   = 8

Compute the <em>p</em>-value as follows:

p-value=P(\chi^{2}_{9}>4.5)=0.809

*Use a Chi-square table.

Thus, the <em>p</em>-value is 0.809.

7 0
3 years ago
Solve for x. Round to the nearest tenth if necessary.
Natasha2012 [34]

Answer:

x = 16

Step-by-step explanation:

9/12 = 12/x

9x = 144

x = 16

7 0
3 years ago
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What does 64/100 represent as a ratio and a percent
Dvinal [7]
64/100 is easy its just 64 out of 100
7 0
3 years ago
Find the indicated real nth roots of a for n=3 ,a=8
Svetach [21]

Answer:

8^ (1/3) =2

Step-by-step explanation:

We want to find cube root of 8

8^ (1/3)

What number times itself 3 times is 8

2*2*2 =8

8^ (1/3) =2

6 0
3 years ago
What is the equation of the line that passes through the point (−8,1) and has a slope of -3/4?
Marrrta [24]

Answer:

y-1=-3/4(x+8)

Step-by-step explanation:

y=mx+b where m=slope and b=y-intercept,

y-y1=m(x-x1)

y-1=-3/4(x-(-8))

y-1=-3/4(x+8)

6 0
3 years ago
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