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alukav5142 [94]
2 years ago
15

the table below shows the ages of houses to the nearest year in a neighborhood. using the age of the houses as the random variab

le, x, which graph shows the probability distribution, px(x), of a randomly chosen house?
SAT
2 answers:
Alchen [17]2 years ago
5 0

Answer:

a on edge

Explanation:

welcome

Sedaia [141]2 years ago
4 0

Probability distributions are used to represent data and their probabilities

The table entry is given as:

<u>Age of House      Number of Houses</u>

1                                         15

2                                        20

3                                         25

4                                        30

Start by calculating the probability of selecting a house that has a certain age.

This is calculated as:

Pr =\frac{Number\ of\ house}{Total\ number\ of\ house}

So, we have:

P(1) = \frac{15}{90} = 0.17

P(2) = \frac{20}{90} = 0.22

P(3) = \frac{25}{90} = 0.28

P(4) = \frac{30}{90} = 0.33

This means that the graph that represents the probability distribution must show that the probability of 1 is 0.17; 2 is 0.22; 3 is 0.28; 4 is 0.33.

Read more about probability distribution at:

brainly.com/question/9385303

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You deposit $2200 into three separate bank accounts that each pay 3% annual interest. How much interest does each
Doss [256]
396.
Basically just multiply $2200 By 3% and six years to find your answer. Hope I helped! :D
3 0
3 years ago
For how many integers $n$ does the inequality $x^2 + nx + 15 &lt; 0$ have no real solutions $x$?.
Rom4ik [11]

By making the determinant equal to or smaller than zero, we will see that there are 15 values of n such that the inequality has no real solution.

<h3>Solving the inequality:</h3>

Here we have the inequality:

x^2 + n*x + 15 < 0

We want to see for which values of n we don't have real solutions.

Now, we can write the quadratic equation:

y = x^2 + nx + 15.

If the determinant of this quadratic equation is negative or 0, then we have a single root or we don't have roots, and because the leading coefficient is positive, that would mean that the function never becomes negative. Then for these cases, the inequality has no real solutions.

Then we must have:

n^2 - 4*15*1  ≤ 0

Now we can solve this for n.

n^2 ≤ 60

Then if n^2  is smaller than 60, we don't have real solutions, and we know that:

√60 = 7.75

Then we have:

-7.75 ≤ n ≤ 7.75

But n can only be an integer, so we can write:

-7  ≤ n ≤ 7

From -7 to 7 there are 15 integers, then there are 15 values of n such that the inequality has no real solutions.

If you want to learn more about inequalities, you can read:

brainly.com/question/11234618

3 0
1 year ago
Because stalin feared western capitalist expansion, he
mote1985 [20]

Because Stalin feared Western capitalist expansion, he refused to allow free elections in Eastern Europe.

<h3>What is Capitalism?</h3>

This refers to the economic system where businesses are allowed to thrive in a free market system with the main aim of making a profit.

Hence, we can see that based on the difference in ideology between America and the Soviet Union; capitalism and communism, Joseph Stalin refused to allow free elections in Eastern Europe for a fear of capitalist expansion.

Read more about Joseph Stalin here:

brainly.com/question/903444

#SPJ1

3 0
2 years ago
Nine less than four times a number equals fifteen
Natasha_Volkova [10]
Simple
Nine less than a number times four equals fifteen
basically, x*4-9=15 would be your equation, or something similar
Well, we know x can't equal 1,2,3,OR 4. Five is also out, because 5*4=20-9=11, so cross that out.
But if you try doing 6*4-6=15, it fits.
6*4=24, 24-9=15
Thus, x=6, so your answer to Nice less than four times a number equals fifteen is 6. 
~Hope this helps!

6 0
3 years ago
The box of candies is shared equally.
masha68 [24]

Answer:

hmm I guess you want to complete ur question..,m

4 0
2 years ago
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