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Kruka [31]
2 years ago
14

A bag of marbles contains five red marbles, 12 blue marbles,

Mathematics
1 answer:
ipn [44]2 years ago
4 0
1. 17/30
2. 3/13
3. 26/52
4. 1/3
5. 1/50
6. 15/51
7. 2, 3,4,5,6,7,8,9, 10,11, 12
    
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Let X be a binomial random variable with p = 0.7 and n = 10. Calculate the following probabilities from the binomial probability
padilas [110]

Answer:

0.4114  

0.0006  

0.1091  

0.1957  

Step-by-step explanation:

<u>Given:  </u>

p = 0.7 n = 10

We need to determine the probabilities using table , which contains the CUMULATIVE probabilities P(X \leq x).  

a. The probability is given in the row with n = 10 (subsection x = 3) and in the column with p = 0.7 of table:  

P(X \leq  3) = 0.4114  

b. Complement rule:  

P( not A) = 1 - P(A)

Determine the probability given in the row with n = 10 (subsection x = 10) and in the column with p = 0.7 of table:  

P(X \leq  10) = 0.9994

Use the complement rule to determine the probability:  

P(X > 10) = 1 - P(X\leq 10) = 1 - 0.9994 = 0.0006  

c. Determine the probability given in the row with n = 10 (subsection x = 5 and x = 6) and in the column with p = 0.7 of table:  

P(X \leq  5) = 0.8042

P(X \leq  6) = 0.9133

The probability at X = 6 is then the difference of the cumulative probabilities:  

P(X = 6) = P(X \leq  6) - P(X \leq  5) = 0.9133 — 0.8042 = 0.1091  

d. Determine the probability given in the row with n = 10 (subsection x = 5 and x = 11) and in the column with p = 0.7 of table:  

P(X \leq  5) = 0.8042

P(X \leq  11) = 0.9999

The probability at 6 \leq X \leq 11 is then the difference between the corresponding cumulative probabilities:  

P(6 \leq  X \leq 11) = P(X \leq 11) - P(X \leq  5) = 0.9999 — 0.8042 = 0.1957  

6 0
3 years ago
What is -4+4 showing additive inverse
rodikova [14]

Answer:

THe answer is 4 because is positive

Step-by-step explanation:

Idk

7 0
3 years ago
Stacy bought a skateboard at a local sporting goods store. The skateboard was on sale for 10% off the original price. The store
riadik2000 [5.3K]
The original price will be larger than the final price because you would be taxing the discounted price not the original price.

Yes. If you add the sales tax first then the discount wont be on just the product. it would be on the product and the tax with the product. so you have to first get the discounted price from the store and then tax for the county.
4 0
3 years ago
What is the value of 20 + 3(7+4) + 5 +2(7+9)
deff fn [24]
Follow the order of operations.

First do what is inside the parenthesis

20 + 3(7+4) + 5 + 2(7+9)
20 + 3(11) + 5 + 2(16)

Next, do the multiplication

20 + 3(11) + 5 + 2(16)
20 + 33 + 5 + 32

Then add

20 + 33 + 5 + 32 = 90
6 0
3 years ago
Read 2 more answers
Find the value of x. <br><br><br>A.20 <br><br>B.25 <br><br>C.18.75 <br><br>D.22.5
miss Akunina [59]

The two equations are vertical angle, which would be equal to each other.

Set the equations to equal and solve for x:

5x -10 = 3x +40

Subtract 3x from both sides:

2x -10 = 40

Add 10 to both sides:

2x = 50

Divide both sides by 2:

x = 50 / 2

x = 25

The answer is B. 25

7 0
3 years ago
Read 2 more answers
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