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xxMikexx [17]
3 years ago
8

A coin is tossed $9$ times, and at least $7$ of the tosses were heads. How many different sequences of tosses could there have b

een?
Mathematics
1 answer:
Dimas [21]3 years ago
8 0
I don’t even kno buh I can guess
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250 students out of 3,000 have found that math is their favorite subject among 10 subjects they are studying. If the choice of f
Oksi-84 [34.3K]

Answer:

The randomization distribution is created under the assumption that H₀: p = 0.1

The randomization distribution will also be centred at 0.1

Step-by-step explanation:

If the distribution was truly random, 1 out of 10 students will choose math as his/her favorite subject.

This means that the randomization will have the null hypothesis saying that the proportion of students who will choose maths as their favourite subject = 0.1

Mathematically, it'll be written as

The null hypothesis is given as

H₀: p = 0.1

And the randomization distribution will be centred at 0.1 too.

The alternative hypothesis will now prove the theory they're looking to see in the question that

Hₐ: p < 0.1

Hope this Helps!!!

5 0
3 years ago
What is the domain of<br> (9c+160)/5
VARVARA [1.3K]

the domain: no real numbers so its  negative infinity, positive infinity  

3 0
3 years ago
Please answer fast
Rudik [331]

Answer:

5 a^3 c

Step-by-step explanation:

5 • a • a • c • a

There are 3 a's so it becomes a^3

5 a^3 c

7 0
3 years ago
Factor completely 3bx2 − 9x3 − b + 3x. (b − 3x)(3x2 − 1) (b + 3x)(3x2 + 1) (b + 3x)(3x2 − 1) Prime
Daniel [21]
3bx^2-9x^3-b+3x=\boxed{3x^2}\cdot b-\boxed{3x^2}\cdot3x\fbox{-1}\cdot b\fbox{-1}\cdot (-3x)\\\\=\boxed{3x^2}(b-3x)\fbox{-1}(b-3x)=\boxed{(b-3x)(3x^2-1)}\\\\completely:\\use:a^2-b^2=(a-b)(a+b)\to3x^2-1=(x\sqrt3)^2-1^2=(x\sqrt3-1)(x\sqrt3+1)
therefore:\\3bx^2-9x^3-b+3x=(b-3x)(3x^2-1)\\=\underline{\underline{(b-3x)(x\sqrt3-1)(x\sqrt3+1)}}
6 0
3 years ago
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Solve for each question <br> 5 | b + 1 | =5
uysha [10]
B=-2 or b=0 is the awnser
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3 years ago
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