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4 years ago

PLEASE HELP

Mathematics

1 answer:

Fantom [35]4 years ago

3 0

In step 3, Mark forgot to multiply 5 · 5, so he ended up with 5 in the denominator instead of 5 · 5 = 25

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Help me please‼️

aksik [14]

Answer:

500x+0.04=y

400x+0.05=y

for percentages move decimal to the left twice

4 0

3 years ago

You are at a stall at a fair where you have to throw a ball at a target. There are two versions of the game. In the first

Tomtit [17]

Answer:

$P(X=0)=(3C0)(0.1)^0 (1-0.1)^{3-0}=0.729$

And the probability of loss with the first wersion is 0.729

$P(Y=0)=(5C0)(0.05)^0 (1-0.05)^{5-0}=0.774$

And the probability of loss with the first wersion is 0.774

As we can see the best alternative is the first version since the probability of loss is lower than the probability of loss on version 2.

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

Alternative 1

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

$X \sim Binom(n=3, p=0.1)$

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:

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

We can find the probability of loss like this P(X=0) and if we find this probability we got this:

$P(X=0)=(3C0)(0.1)^0 (1-0.1)^{3-0}=0.729$

And the probability of loss with the first wersion is 0.729

Alternative 2

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

$Y \sim Binom(n=5, p=0.05)$

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

$P(Y)=(nCy)(p)^y (1-p)^{n-y}$

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

$nCy=\frac{n!}{(n-y)! y!}$

We can find the probability of loss like this P(Y=0) and if we find this probability we got this:

$P(Y=0)=(5C0)(0.05)^0 (1-0.05)^{5-0}=0.774$

And the probability of loss with the first wersion is 0.774

As we can see the best alternative is the first version since the probability of loss is lower than the probability of loss on version 2.

4 0

4 years ago

A theater has 30 seats in the first row, 33 seats in the second row, 36 seats in the third row, and so on in the same increasing

Ghella [55]

The answer is A. 765

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3 years ago

Hymie Caddiddle is a truck driver who earns $56,000 a year driving cross-country. He is single with no dependents. He pays $2,43

BARSIC [14]

In order to solve this problem, we need to figure out what percent 2,430 is of 56,000. We do this by dividing 2,430 by 56,000. This is equal to 0.04339. We multiply this by 100 to get a percent. This is equal to 4.339%, so the tax rate is 4.339%.

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3 years ago

Read 2 more answers

What is the length of ? Round to the nearest tenth. hurry please

professor190 [17]

Well from positive y axis Q is situated at 6 units while P is situated at 3 units.

So length of PQ - 6+3 = 9 units.
Rounding up your answer is 10 units

5 0

3 years ago