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3 years ago

Module,string,battery,array.(find the odd man out)

Mathematics

1 answer:

son4ous [18]3 years ago

3 0

Answer:

string

Step-by-step explanation:

beacuse module,battery,array are same

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use each of the digits 2,3,5,8 once with any combination of +,-,., or () to write an expression with a value of 104

densk [106]

8 times 13 = 104

8 * ( 5*3 - 2) = 104

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3 years ago

Twenty four is less than 10 times the number equals 64 more than 8 times a number.

Elena-2011 [213]

You would write the equation like this:
24-10n=64+8n

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3 years ago

Help pls or don't and be guilty for the rest of the day

Fiesta28 [93]

Answer:

Step-by-step explanation:

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3 years ago

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The probability that two people have the same birthday in a room of 20 people is about 41.1%. It turns out that

salantis [7]

Answer:

a) Let X the random variable of interest, on this case we know that:

$X \sim Binom(n=20, p=0.411)$

This random variable represent that two people have the same birthday in just one classroom

b) We can find first the probability that one or more pairs of people share a birthday in ONE class. And we can do this:

$P(X\geq 1 ) = 1-P(X$

And we can find the individual probability:

$P(X=0) = (20C0) (0.411)^0 (1-0.411)^{20-0}=0.0000253$

And then:

$P(X\geq 1 ) = 1-P(X$

And since we want the probability in the 3 classes we can assume independence and we got:

$P= 0.99997^3 = 0.9992$

So then the probability that one or more pairs of people share a birthday in your three classes is approximately 0.9992

Step-by-step explanation:

Previous concepts

A Bernoulli trial is "a random experiment with exactly two possible outcomes, "success" and "failure", in which the probability of success is the same every time the experiment is conducted". And this experiment is a particular case of the binomial experiment.

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".

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

Part a

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

$X \sim Binom(n=20, p=0.411)$

This random variable represent that two people have the same birthday in just one classroom

Part b

We can find first the probability that one or more pairs of people share a birthday in ONE class. And we can do this:

$P(X\geq 1 ) = 1-P(X$

And we can find the individual probability:

$P(X=0) = (20C0) (0.411)^0 (1-0.411)^{20-0}=0.0000253$

And then:

$P(X\geq 1 ) = 1-P(X$

And since we want the probability in the 3 classes we can assume independence and we got:

$P= 0.99997^3 = 0.9992$

So then the probability that one or more pairs of people share a birthday in your three classes is approximately 0.9992

4 0

3 years ago

You can spend no more than $100 on a party you are hosting. The cost per guest is $8. What is the greatest number of guests that

spayn [35]

Answer:

the greatest number of guests is 12 guests

Step-by-step explanation:

100÷8=12.5

3 0

3 years ago

Read 2 more answers

Module,string,battery,array.(find the odd man out)​

Module,string,battery,array.(find the odd man out)