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BaLLatris [955]
2 years ago
14

Is this right please help.Will mark brainliest

Mathematics
2 answers:
oksano4ka [1.4K]2 years ago
5 0
Its 5. -7+12=5 I think that's the answer
KatRina [158]2 years ago
3 0
Yes it is because -7+7=0 & 0+5=5 & 7+5=12
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An exam consists of 50 multiple choice questions. Based on how much you studied, for
Ann [662]

Using the Central Limit Theorem, it is found that the sampling distribution of the sample proportion of the 50 questions on which you get the correct is approximately normal, with mean of 0.7 and standard error of 0.0648.

<h3>What does the Central Limit Theorem state?</h3>

It states that for a proportion p in a sample of size n, the sampling distribution of sample proportion is approximately normal with mean \mu = p and standard deviation s = \sqrt{\frac{p(1 - p)}{n}}, as long as np \geq 10 and n(1 - p) \geq 10.

In this problem, we have that p = 0.7, n = 50, hence the mean and the standard deviation are given as follows:

\mu = p = 0.7

s = \sqrt{\frac{p(1 - p)}{n}} = \sqrt{\frac{0.7(0.3)}{50}} = 0.0648

More can be learned about the Central Limit Theorem at brainly.com/question/24663213

5 0
2 years ago
. In the design of an electromechanical product, 12 components are to be stacked into a cylindrical casing in a manner that mini
Harlamova29_29 [7]

Answer:

(a) 479,001,600 combinations (b) 95,040 combinations (c) 3,326,400  combinations

Step-by-step explanation:

(a) In the case we have 12 different elements to stack, the possible combinations can be calculated as a premutation of 12 elements:

P = 12! = 479,001,600 combinations

(b) If seven components are identical, we have a permutation with repetition.

We have 7!=5040 combinations that are the same, so there is only one unique out of 5040 combinations. We have to divide the total possible combinations by 5040.

P = 12! / 7! = 479,001,600 / 5,040 = 95,040 combinations

(c) In the same way, if we have 3 components of Type 1 and 4 components of Type 2 (and the others all different), we have 3!*4! = 144 combinations that are the same.

P = 12!/(3!*4!) = 479,001,600 / 144 = 3,326,400  combinations

3 0
3 years ago
The ratio equivelent ot 1/3 is
Ann [662]
1:3 is equivalent to 1/3
7 0
3 years ago
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Answer:

Step-by-step explanation:

When the exponent is attached to the trig function like that, its essentially the same thing as taking the entire function to that power.

tan^2(x) = (tanx)^2

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3 years ago
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forsale [732]

Answer:

DAMMIT I BIT MY FINGER

Step-by-step explanation:

6 0
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