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anzhelika [568]
4 years ago
6

Can you always show that a prediction based on theoretical probability is true by performing the event often enough? If so, expl

ain why. If not, describe a situation that justifies your response

Mathematics
1 answer:
kondaur [170]4 years ago
8 0
You can prove that it is true based on that because if you have done it often enough, you can determine that the probability of it happening again is true

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Imagine that Amy counted 60 numbers per minute and continued to count nonstop until she reached 19,000. Determine a reasonable e
Nonamiya [84]

Answer:

It will take Amy approximately 5 hours to count to 19000

Step-by-step explanation:

Amy counts 60 numbers per minute, since an hour has 60 minutes, this means that Amy will count 60 x 60 =3600 numbers per hour.

Now we divide the quantity of numbers she counts: 19,000 by 3600 (numbers she counts per hour)

19000÷3600= 5.27777

Therefore, it will take Amy approximately 5 hours to count to 19000

3 0
4 years ago
A sample of 1600 computer chips revealed that 43% of the chips do not fail in the first 1000 hours of their use. The company's p
Tom [10]

Answer: The value of the test statistic is z= 1.63 .

Step-by-step explanation:

Test statistic for proportion :

z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

, where p =population proportion.

\hat{p} = sample proportion

n= sample size.

Let p be the proportion of chips do not fail in the first 1000 hours of their use.

As per given, we have

p=0.41\\ n= 1600\\\hat{p}=0.43

Then, required test statistic would be

z=\dfrac{0.43-0.41}{\sqrt{\dfrac{0.41(1-0.41)}{1600}}}\\\\=\dfrac{0.02}{\sqrt{0.0001511875}}\\\\\approx\dfrac{0.02}{0.0123}\approx1.63

Hence, the value of the test statistic is z= 1.63 .

3 0
4 years ago
Is this a function??
Blizzard [7]
Yes this is a function because the definition of a function is if the x doesn’t repeat and we can test this with the vertical line test that states that if you put an imaginary line where the points are the x shouldn’t repeat in this case this is true as the x doesn’t repeat

Your welcome
8 0
3 years ago
X and y vary inversely, and y =7 when x = 4. What is the constant of variation?
o-na [289]

Answer:

Y doesn't vary directly with x

4 0
4 years ago
Read 2 more answers
What’s the answer of a multiplying polynomials (3x-1) to the second power and (x+6) to the second power
Vladimir [108]

9x^4+102x^3+253x^2-204x+36 is the result of multiplying (3x-1) to the second power and (x+6) to the second power

<h3><u>Solution:</u></h3>

Given that we have to find the result of multiplying polynomials (3x-1) to the second power and (x+6) to the second power

"Second power" means the term is raised to power of 2

Therefore,

We have to multiply (3x-1)^2 \text{ and }(x+6)^2

\rightarrow (3x-1)^2 \times (x+6)^2

We can use the algebraic identity to expand the above expression

(a+b)^2 = a^2+2ab+b^2\\\\(a-b)^2=a^2-2ab+b^2

Applying these in above expression, we get

\rightarrow ((3x)^2-2(3x)(1)+1^2) \times (x^2+2(x)(6)+6^2)\\\\\rightarrow (9x^2-6x+1) \times (x^2+12x+36)

Multiply each term in first bracket with each term in second bracket

\rightarrow 9x^2(x^2)+(9x^2)(12x)+(9x^2)(36)-6x(x^2)-6x(12x)-6x(36) + x^2+12x+36

Simplify the above expression

\rightarrow 9x^4+108x^3+324x^2-6x^3-72x^2-216x+x^2+12x+36

Combine the like terms

\rightarrow 9x^4+102x^3+253x^2-204x+36

Thus the above expression is the result of multiplying (3x-1) to the second power and (x+6) to the second power

4 0
3 years ago
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