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2 years ago

10

456 students participated in switch day the students raised money for charity so that the principal would approve of the day if

the total amount of money raised was $912 and each student brought in the same amount of money how much did each student raise?

1 answer:

Eddi Din [679]2 years ago

3 0

Well according to my calculations, each student brought in $2

Hope that helps :D

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A manufactured lot of buggy whips has 20 items, of which 5 are defective. A random sample of 5 items is chosen to be inspected.

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Answer:

$P(X=1)$

And using the probability mass function we got:

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Step-by-step explanation:

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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

For this cae that one buggy whip would be defective is $p = \frac{5}{20}=0.25$

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

$X \sim Binom(n=5, p=0.25)$

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:

$P(X=1)$

And using the probability mass function we got:

$P(X=1) = (5C1) (0.25)^1 (1-0.25)^{5-1}= 0.396$

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Answer:

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Step-by-step explanation:

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Read 2 more answers

(04.01, 04.02 HC)

Kitty [74]

Eric spend 60 minutes for basketball and 35 minutes for volleyball.

<h3>What is Linear Equation?</h3>

An equation that has the highest degree of 1 is known as a linear equation. This means that no variable in a linear equation has an exponent more than 1. The graph of a linear equation always forms a straight line.

Here, let Eric plays basketball for x minutes.

and volleyball for y minutes.

Total time spend on playing basketball and volleyball everyday = 95 minutes.

Duration of Basketball 25 minutes more than volleyball

Now, according to question,

x + y = 95 ..........(i)

x - 25 = y ...........(ii)

On solving equation (i) and (ii), we get

x + x - 25 = 95

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2x = 120

x = 120 / 2

x = 60

put value of x in equation (ii), we get

60 - 25 = y

y = 35

Yes, it is possible and clearly described in above calculation.

Thus, Eric spend 60 minutes for basketball and 35 minutes for volleyball.

Learn more about Linear Equation from:

brainly.com/question/11897796

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