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Hoochie [10]
3 years ago
15

DONT ANSWER IF YOU DO NOT KNOW!

Mathematics
2 answers:
Lynna [10]3 years ago
6 0

Answer:

~2.09

Step-by-step explanation:

pashok25 [27]3 years ago
3 0

Answer:

volume = 2.09 ft³

Step-by-step explanation:

volume = 1/3πr²h = 1/2(3.14)(1²)(2) = 2.09 ft³

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Can someone help please
marysya [2.9K]

I would say B. The mean is a good measure of central tendency.

I hope this helps!


6 0
3 years ago
Given: ABCD is a trapezoid, AB = CD, BK ⊥ AD, AK = 10, KD = 20 Find: BC AD
alexdok [17]

Answer:

<u> BC = 10 and AD = 30</u>

Step-by-step explanation:

In figure-1 , AB = CD ,BK ⊥ AD,  AK = 10,  KD = 20.

Since, line AD is sum of AK and  KD, then

AD = AK + KD

AD = 10 + 20

AD = 30

Since, BC ║AD and BK ⊥ AD then similarly we construct CL ⊥ AD

so, BC = KL and AK = LD

KL = AD - LD

KL = 20 - 10

KL = 10

Since, BC = KL then BC = 10

Hence, <u> BC = 10 and AD = 30</u>

4 0
3 years ago
Solve for x.<br><br> x+3.2=−3.5<br><br> (Any help at all is greatly appreciated!)
Maksim231197 [3]
You have to subtract 3.2 from 3.5 to get x. 0.3+ 3.2=2.5 so x=0.3
7 0
3 years ago
Read 2 more answers
1) If the alpha level is changed from α = .05 to α = .01, what happens to boundaries for the critical region?
Alexxandr [17]

Answer:

1) a. Move farther into the tails

2) a. Decreases

Step-by-step explanation:

Hello!

1)

Let's say for example that you are making a confidence interval for the mean, using the Z-distribution:

X[bar] ± Z_{1-\alpha /2} * \frac{Sigma}{\sqrt{n} }

Leaving all other terms constant, this are the Z-values for three different confidence levels:

90% Z_{0.95}= 1.648

95% Z_{0.975}= 1.965

99% Z_{0.995}= 2.586

Semiamplitude of the interval is

d= Z_{1-\alpha /2} * \frac{Sigma}{\sqrt{n} }

Then if you increase the confidence level, the value of Z increases and so does the semiamplitude and amplitude of the interval:

↑d= ↑Z_{1-\alpha /2} * \frac{Sigma}{\sqrt{n} }

They have a direct relationship.

So if you change α: 0.05 to α: 0.01, then the confidence level 1-α increases from 0.95 to 0.99, and the boundaries move farther into the tails.

2)

The significance level of a hypothesis test is the probability of committing a Type I error.

If you decrease the level from 5% to 1%, then logically, the probability decreases.

I hope this helps!

5 0
3 years ago
Halp me<br> halp me<br> halp me<br> halp me
Elan Coil [88]
The answer is 8.72.

sqrt(76) = 2sqrt(19)
2sqrt(19) = 8.717797887
Rounded to nearest hundredth ≈ 8.72
4 0
2 years ago
Read 2 more answers
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