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anastassius [24]
3 years ago
6

I WILL GIVE BRAINLIEST Who will get this question right

Mathematics
1 answer:
Ksju [112]3 years ago
6 0
If 101 use 3/5 for his Artwork, then the space remaining for 102 is:

5/5 - 3/5 = 2/5 (since the whole wall represents 100% or 5/5 or 1)

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Use a normal approximation to find the probability of the indicated number of voters. In this case, assume that 104 eligible vot
crimeas [40]

Answer:

The probability that exactly 27 of 104 eligible voters voted is​ 0.057 = 5.7%.

Step-by-step explanation:

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Normal probability distribution

Problems of normally distributed distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that \mu = E(X), \sigma = \sqrt{V(X)}.

In this case, assume that 104 eligible voters aged 18-24 are randomly selected.

This means that n = 104.

Suppose a previous study showed that among eligible voters aged 18-24, 22% of them voted.

This means that p = 0.22

Mean and standard deviation:

\mu = 104*0.22 = 22.88

\sigma = \sqrt{104*0.22*0.78} = 4.2245

Probability that exactly 27 voted

By continuity continuity, 27 consists of values between 26.5 and 27.5, which means that this probability is the p-value of Z when X = 27.5 subtracted by the p-value of Z when X = 26.5.

X = 27.5

Z = \frac{X - \mu}{\sigma}

Z = \frac{27.5 - 22.88}{4.2245}

Z = 1.09

Z = 1.09 has a p-value of 0.8621

X = 26.5

Z = \frac{X - \mu}{\sigma}

Z = \frac{26.5 - 22.88}{4.2245}

Z = 0.86

Z = 0.86 has a p-value of 0.8051

0.8621 - 0.8051 = 0.057

The probability that exactly 27 of 104 eligible voters voted is​ 0.057 = 5.7%.

5 0
3 years ago
Solve for w 8/5w =40 whats the answer , whats w its in a fraction w is by the fraction
densk [106]

Answer:

So first, you have to isolate w. You can do this by getting rid of the 8/5.

This will get you to: w = 25

7 0
4 years ago
What is the sum of the geometric series?
Alex_Xolod [135]
Idk.. need more details
4 0
3 years ago
Read 2 more answers
Write the equation of a line with the slope, \frac{-1}{2}, which passes through the point (5, -6). write the answer in slope-int
Goryan [66]
Y= -1/2x +b
-6= -1/2(5) +b
-6 = -2.5 +b
-3.5 = b

Answer: y= -1/2x - 3.5
8 0
3 years ago
Using pemdas get the answer for -6-5(4-6)
Veronika [31]

Answer:

4

Step-by-step explanation:

-6-5(4-6)

PEMDAS stands for parenthesis, exponent, multiply, divide, add, subtract. Let's follow those rules!

First, we'll do the parenthesis.

-6-20+30

Now we can just add and subtract everything together.

-6+10

4

7 0
3 years ago
Read 2 more answers
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