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Kruka [31]
3 years ago
12

I NEED HELP ASAP!!!!

Mathematics
1 answer:
Degger [83]3 years ago
4 0
I hope this helps you!

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s2008m [1.1K]

Answer:

(\frac{2}{5})c

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Some parts of California are particularly earthquake-prone. Suppose that in one metropolitan area, of all homeowners are insured
ANTONII [103]

Missing part of the question

Some parts of California are particularly earthquake-prone. Suppose that in one metropolitan area, 25% of all homeowners.....................

Answer:

P(X = x) = ^4C_x * 0.25^x * 0.75^{4-x}

Mean = 1

Pr = 0.2617

Step-by-step explanation:

Given

n = 4

p = 25\%

Solving (a): The probability distribution of x

We have:

n = 4

p = 25\% = 0.25

The probability of not having earthquake insurance (q) is:

q = 1 - p

q = 1 - 0.25 = 0.75

If x has insurance, then n - x do not.

The distribution follows a binomial pattern. So, the probability distribution is:

P(X = x) = ^nC_x * 0.25^x * 0.75^{n-x}

Substitute 4 for n

P(X = x) = ^4C_x * 0.25^x * 0.75^{4-x}

Solving (b): The most likely value of x i.e. The mean

We have:

n = 4 and

p = 25\% = 0.25

Mean = np

Mean = 4 * 0.25

Mean = 1

Solving (c): At least 2 of 4 selected have earthquake insurance.

This is calculated as

Pr = P(x = 2) + P(x = 3) + P(x = 4)

P(X = x) = ^4C_x * 0.25^x * 0.75^{4-x}

P(X=2) = ^4C_2 * 0.25^2 * 0.75^{4-2}

P(X=2) = 6 * 0.25^2 * 0.75^2 = 0.2109375

P(X=3) = ^4C_3 * 0.25^3 * 0.75^{4-3}

P(X=3) = 4 * 0.25^3 * 0.75 = 0.046875

P(X=4) = ^4C_4 * 0.25^4 * 0.75^{4-4}

P(X=4) = 1 * 0.25^4 * 1= 0.00390625

So:

Pr = P(x = 2) + P(x = 3) + P(x = 4)

Pr = 0.2109375 + 0.046875 + 0.00390625

Pr = 0.26171875

Pr = 0.2617 --- approximated

6 0
3 years ago
What is the answer I feel like this is wrong?
juin [17]
It's C! Substitute f(x) for 8 to get 8=x/2+5 then subtract 5 from both sides to get 3=x/2 then multiply both sides by 2 to isolate x and you get 6=x!
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So i had a 95 in math but then my teacher wanted to drop it to a 45 because she thought something was missing but now how do i b
Amiraneli [1.4K]

Answer:

just ask

Step-by-step explanation:

ask your teacher what am I missing i felt like I had everything done what am i not turning in

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Given the graph of a scatterplot and a trend line, explain how you would find the equation of the trend line.
SpyIntel [72]

To find the equation of a trend line, It is important to find the X axis and Y axis, Once x axis and y axis  is found if there is an association between x axis and y axis, We use linear equation to produce the trend line. Linear regression or algorithm called as OLS (Ordinary least square). Y= mx +c

y = dependent variable, x = independent variable , constant = c , m  = y2-y1/x2-x1.

Step-by-step explanation:

  • Scatter plot is to find association of two different variable.
  • Trend line is the equation between xaxis and y axis.
  • Prediction is best way to form equation.
  • Linear regression y=mx +c
  • Equation helps in predictive modelling between next best form.
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  • Linear regression is starting phase of data analysis.
  • C = constant there is a certain point, where system has been started.
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