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2 years ago

11

HELP ASAP PIC IS BELOW!!!

1 answer:

sergiy2304 [10]2 years ago

4 0

Answer:

55°

Step-by-step explanation:

Vertical angles are similar

Answered by GAUTHMATH

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Find the probability of at least 6 failures in 7 trials of a binomial experiment in which the probability of success in any one

oksano4ka [1.4K]

Answer:

$P(x \geq 6)=P(X=6)+P(X=7)$

And we can find the individual probabilities:

$P(X=6)=(7C6)(0.91)^6 (1-0.91)^{7-6}=0.358$

$P(X=7)=(7C7)(0.91)^7 (1-0.91)^{7-7}=0.517$

And replacing we got:

$P(x \geq 6)=P(X=6)+P(X=7)= 0.358+0.517=0.875$

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".

Solution to the problem

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

$X \sim Binom(n=7, p=1-0.09=0.91)$

The probability associated to a failure would be p =1-0.09 = 0.91

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:

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

And we want to find this probability:

$P(x \geq 6)=P(X=6)+P(X=7)$

And we can find the individual probabilities:

$P(X=6)=(7C6)(0.91)^6 (1-0.91)^{7-6}=0.358$

$P(X=7)=(7C7)(0.91)^7 (1-0.91)^{7-7}=0.517$

And replacing we got:

$P(x \geq 6)=P(X=6)+P(X=7)= 0.358+0.517=0.875$

6 0

2 years ago

Can somebody please help (no websites)

const2013 [10]

Answer:

x y

0 .75

3 3.75

9 9.75

Step-by-step explanation:

You add .75 to whatever number x equals, to get y.

Hope that this helps!

4 0

1 year ago

The work below shows how to use long division to find (y2 – 6y + 9) (y – 4).

vladimir2022 [97]

Answer:

the answers are b and e

Step-by-step explanation:

6 0

2 years ago

If p+q has the value that is exactly 1/3 less than p what is the value of q

solmaris [256]

Answer:

q = - $\frac{1}{3}$ p

Step-by-step explanation:

$\frac{1}{3}$ less than p = $\frac{2}{3}$ p

Thus

p + q = $\frac{2}{3}$ p ( multiply through by 3 to clear the fraction )

3p + 3q = 2p ( subtract 3p from both sides )

3q = - p ( divide both sides by 3 )

q = - $\frac{1}{3}$ p

8 0

2 years ago

A team is selling discount cards as a fundraiser. The table shows the number of cards sold and the remaining amount of money nee

Lapatulllka [165]

the correct answer is negative

4 0

3 years ago

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