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Dimas [21]
3 years ago
13

Determine whether the random variable described is discrete or continuous.

Mathematics
1 answer:
dlinn [17]3 years ago
7 0

Answer:

discrete

Step-by-step explanation:

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The population (in millions) of a certain country can be approximated by the
Agata [3.3K]

Answer:

year 2343

Step-by-step explanation:

The population (in millions) of a certain country can be approximated by the

function:

P(x) = (100)*1.02^(x)

where x is the number of years after 2000.

If we want a population of 300 million

300.10^6 = (100)*1.02^(x)

3.10^6 = 1.02^(x)

Which can be solved with a calculator or any computational tool. See attached pictures

The answer is

x = 342.804

2000 + 342.804 = 2342.804 ≈ 2343

4 0
3 years ago
Carmen used a random number generator to simulate a survey of how many children live in the households in her town. There are 1,
kiruha [24]

About 296 households have more than three children. Then the correct option is C.

<h3>How to find that a given condition can be modeled by binomial distribution?</h3>

Suppose we have random variable X pertaining to a binomial distribution with parameters n and p, then it is written as

 

The expected value will be

E(X) = np

Carmen used a random number generator to simulate a survey of how many children live in the households in her town.

There are 1,346 unique addresses in her town with numbers ranging from zero to five children.

The results of 50 randomly generated households are shown below.

Children in 50 Households

Number of Children        Number of Households

             0                                          5

             1                                          11

             2                                        13

             3                                        10

             4                                         9

             5                                         2

Then the value of p and n will be

p = 11/50

n = 1346

Then the expected value will be

E(x) = (11/50) x 1346

E(x) = 296.12 ≈ 296

Then the correct option is C.

Learn more about binomial distribution here:

brainly.com/question/13609688

#SPJ1

4 0
2 years ago
Find the number of real number solutions for the equation. x2 − 18 = 0
choli [55]
Add 18 on both sides of the equation
18+0 = 18
18÷2 = 9
5 0
3 years ago
The multiple choice are 267.3km cubed<br> 534.6km cubed<br> And 584 km cubed
gogolik [260]
I think it is 584 km cubed
3 0
3 years ago
two passenger train traveling in opposite directions meet and pass each other. Each train is 1/18 miles long and is traveling at
xz_007 [3.2K]

9514 1404 393

Answer:

  5 seconds

Step-by-step explanation:

Suppose the front parts of the trains meet at point A. Since both are the same length and traveling the same speed, each will pass point A in time ...

  time = distance/speed

  time = (1/18 mi)/(40 mi/h) = (1/720 h) × (3600 s)/(1 h) = 5 s

That is, the rear part of each train will be at point A 5 seconds after the front part.

The rear parts will pass each other 5 seconds after the front parts meet.

6 0
3 years ago
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