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mario62 [17]
2 years ago
5

Hi I have my answer in I’m just confused and think it’s gonna be wrong so could u guys help me

Mathematics
1 answer:
Masteriza [31]2 years ago
8 0

Answer:

I believe the first one is rotation And the second is ABC= DEF.

Step-by-step explanation:

My geometry is really rusty so I apologize if they’re wrong

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A study investigated the effectiveness of meditation training in reducing trait anxiety. The study evaluated subjects trait anxi
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Answer:

The 99% confidence interval for the population mean reduction in anxiety was (1.2, 8.6).

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 27 - 1 = 26

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 26 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.99}{2} = 0.995. So we have T = 2.7787.

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.7787\frac{6.9}{\sqrt{27}} = 3.7

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 4.9 - 3.7 = 1.2.

The upper end of the interval is the sample mean added to M. So it is 4.9 + 3.7 = 8.6.

The 99% confidence interval for the population mean reduction in anxiety was (1.2, 8.6).

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2 years ago
A cone has volume 12 cubic inches. Its radius is 2 inches. What is its height?
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Answer:

h≈2.86

Step-by-step explanation:

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3 years ago
Find the area, in square feet, of the smallest square. A-169% A-144/12
Aloiza [94]
The answer should be b
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The radius of circle B is 6 centimeters. The area of the shaded sector is 31.42 square centimeters. Calculate the angle of the s
algol13

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Step-by-step explanation:

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