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3 years ago

601,780 thousands round each number to the value indicated

Mathematics

1 answer:

tiny-mole [99]3 years ago

8 0

Your number is already rounded up please explain better and mark me brainliest

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r-ruslan [8.4K]

multiply the original number to get the new ones

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3 years ago

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A man claims to have extrasensory perception. As a test, a fair coin is flipped 28 times, and the man is asked to predict the ou

nikdorinn [45]

Answer:

$P(25 \leq x \leq 28)=P(X=25)+P(X=26)+P(X=27)+P(X=28)$

Using the probability mass function we got:

$P(X=25)=(28C25)(0.5)^{25} (1-0.5)^{28-25}=0.0000122$

$P(X=26)=(28C26)(0.5)^{26} (1-0.5)^{28-26}=0.00000141$

$P(X=27)=(28C27)(0.5)^{27} (1-0.5)^{28-27}=0.000000104$

$P(X=28)=(28C28)(0.5)^{28} (1-0.5)^{28-28}=3.75x10^{-9}$

And adding the probabilities we got:

$P(25 \leq X \leq 28) = 0.00001372$

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Let X the random variable of interest, on this case we now that:

$X \sim Binom(n, p)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

Solution to the problem

For a fair coin flip n=28 times we have the following distribution:

$X \sim Binom(n=28, p=0.5)$

We want to find this probability:

$P(25 \leq x \leq 28)=P(X=25)+P(X=26)+P(X=27)+P(X=28)$

Using the probability mass function we got:

$P(X=25)=(28C25)(0.5)^{25} (1-0.5)^{28-25}=0.0000122$

$P(X=26)=(28C26)(0.5)^{26} (1-0.5)^{28-26}=0.00000141$

$P(X=27)=(28C27)(0.5)^{27} (1-0.5)^{28-27}=0.000000104$

$P(X=28)=(28C28)(0.5)^{28} (1-0.5)^{28-28}=3.75x10^{-9}$

And adding the probabilities we got:

$P(25 \leq X \leq 28) = 0.00001372$

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3 years ago

8 x (3.8 + 13.2)-6 =

prisoha [69]

Answer:

Add

3.8

and

13.2

⋅

−

Multiply

136

−

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2 years ago

What tablet is This hahahah

lora16 [44]

I don’t know I wish I could help but this shouldn’t be in this category

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2 years ago

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Bogdan [553]

Answer:

x2 +13x+4

Step-by-step explanation:

1+2+3= 4 quick maths

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