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GuDViN [60]
3 years ago
14

Help me with 17. And I will give you all my love and affection!!!!!

Mathematics
1 answer:
ella [17]3 years ago
8 0

Answer:

8 in

Step-by-step explanation:

Use the equation  V=\pi r^2h  to solve this.  You have V=301, pi, and h=6.  Solve for r.

301 = \pi r^2(6)\\\sqrt{ \frac{301}{6\pi }} = r\\r = 3.996

r is the radius.  d is the diameter.  The diameter is equal to the radius times two.  Double the value you found.

3.996 × 2 = 7.992 ≈ 8

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Use the given data to find the best predicted value of the response variable x. Ten pairs of data yield r=0.003 and the regressi
Angelina_Jolie [31]

Answer:

Step-by-step explanation:

Given the regression equation :

y=2+3x

Mean of y values ; y = 5.0

Where y is the predicted variable ; x = predictor variable

The predicted value of y for X = 2

Null: H0 = 5

Alternative H1 : ≠ 5

Sample size (n) = 10 pairs

Degree of freedom = n - 2 = 10 - 2 = 8

7 0
3 years ago
The mean output of a certain type of amplifier is 102 watts with a standard deviation of 12 watts. If 63 amplifiers are sampled,
sammy [17]

Answer:

0.97547

Step-by-step explanation:

Given That:

Mean (m) = 102

Standard deviation (σ) = 12

Sample size (n) = 63

Probability that sample mean would differ from Population mean by less than 3.4 watts

P(m - s < X < m + s)

P(102 - 3.4 < Z < 102 + 3.4)

Using the Z formula :

Zscore = (x - m) / (σ/√n)

x = 102 - 3.4 = 98.6 ; x = 102 + 3.4 = 105.4

Z = (98.6 - 102) / (12/√63) = −2.248888

P(Z < - 2.2488) = 0.012263 (Z probability calculator)

Z = (105.4 - 102) / (12/√63) = 2.2488886

P(Z < 2.2488) = 0.98774 (Z probability calculator)

0.98774 - 0.012263 = 0.97547

4 0
3 years ago
Could someone explain why (-4)² is equal to 16 but -4² is equal to -16​
erica [24]

Answer:

It's all about the brackets.

Step-by-step explanation:

If we do (-4)^2, the brackets make it -4 x -4 and the two negatives make a positive of 16.

If we do -4^2, that means that the 4 is squared before putting the minus sign there so you have 4x4 = 16 then put the minus to get -16.

Hope this helps!

treviglaslibrary

8 0
3 years ago
Read 2 more answers
Easy will give brainlest no files.
Andreyy89

Answer:

can u give better picture

5 0
2 years ago
Read 2 more answers
Calculate the standard deviation of the following data.
anyanavicka [17]
I think it would be the first one
8 0
3 years ago
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