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sertanlavr [38]
3 years ago
5

Akira turns in a written lab report to his science teacher.

Mathematics
2 answers:
Marta_Voda [28]3 years ago
8 0
His science teacher says “Thank you I will grade it after school” when it’s after school the teacher checks it and Akita gets an A because she is smart and Brainly helped her :)
krek1111 [17]3 years ago
4 0

Answer:

communicating results

Step-by-step explanation:

hope this helps

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The probability distribution of random variable, X, is defined as follows:
stealth61 [152]

Answer and Step-by-step explanation:

A) For the model to be a probability distribution, it has to follow two conditions:

1) The probability of each value of the discrete random variable is between, and included, 0 and 1:

2) The sum of all probabilities is 1;

In the table shown, the probabilities are from 0 to 0.3 - between 0 and 1;

Adding the probabilities: 0 + 0.3 + 0.1 + 0.3 + 0.3 = 1

Therefore, this model is a valid probability distribution model.

B) They are discrete because each value correspond to a finite number of possible values.

C) Expected value is calculated by

E(X) = \Sigma xP(x)

E(X) = 0.0 + 1*0.3 + 2*0.1 + 3*0.3 + 4*0.3

E(X) = 2.6

D) P(X=3) = P(3), which means probability of 3:

P(X=3) = 0.3

E) P(X<4): probabilities of values of X that are less than 4:

P(X<4) = P(0) + P(1) + P(2) + P(3)

P(X<4) = 0 + 0.3 + 0.1 + 0.3

P(X<4) = 0.7

F) P(X>0) = P(1) + P(2) + P(3) + P(4)

P(X>0) = 0.3 + 0.1 + 0.3 + 0.3

P(X>0) = 1

G) P(X=5) = P(5)

There is no probability of P(5) because the model doesn't "cover" that number.

H) P(X=0) = P(0)

P(X=0) = 0

I) The total area of any density curve is 1 because it represents all the possible values a variable can assume.

3 0
3 years ago
In a group of 343 children, 104 have a swing set, 126 have a trampoline and 42 have a swing set and trampoline. How many have a
Tresset [83]

Answer:

None of the above

4 0
2 years ago
What is the square root of 18 rounded to the nearest tenth
ratelena [41]

Answer: 4.2

Step-by-step explanation:

when you square root 18 you get 4.242. When rounded to the nearest tenth you get 4.2 since 4 is not nor is 5 and exceeds it.

8 0
3 years ago
Read 2 more answers
What is the perimeter of a rectangle with side lengths 6x-86x−8 and 3+14x3+14x
Ivahew [28]

EXPLANATION:  (2x6)-10)+2(4x13+(12-20)

ANSWER:  (20x14)=280 thats what i got lmk if its incorrect

5 0
2 years ago
Can someone help with this question please?
shusha [124]
The answer is A because 500 x 6 equals 3000 and 5000 minus 3000 equals 2000
6 0
3 years ago
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