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Minchanka [31]
2 years ago
14

A surgery has a success rate of 75%. Suppose that the surgery is performed on 4 patients. What is the probability that the surge

ry is successful on exactly 3 patients?
Mathematics
1 answer:
KiRa [710]2 years ago
7 0

0.21094 is the probability that the surgery is successful on exactly 3 patients.

<h3>What is probability?</h3>

It is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true.

According to the given question,

Let Y = The number of patients who respond yes: Y - Bin (n,p)

Given , n = 4 , p = 0.75 ,  q = 1 - p =  0.25

P (Y = 3) = \left(\begin{array}{ccc}4\\3\\\end{array}\right)  (0.75)^{2}(0.25)^{4-3}  \\             =  0.21094\\\\

The probability that the surgery is successful on exactly 3 patients is 0.21094

Learn more about Probability here:

brainly.com/question/23345093

#SPJ1

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Rick used 4 2/3 yards of fabric to sew 3 1/2 shirts. what is the unit rate of cloth he used in terms of yards per shirt
GarryVolchara [31]
For sewing 3 1/2 shirts, he used = 4 2/3 yards of fabric
Then, for 1 shirt, it would be: 4 2/3 / 3 1/2

Fabric for 1 shirt = 14/3 / 7/2
We can re-write it as: 14/3 * 2/7 = 4/3 yards

In short, Final answer would be 4/3 or 1 1/3 yards

Hope this helps!
7 0
4 years ago
What is 7 times 3 + 8
Mandarinka [93]

Answer:

29

Step-by-step explanation:

7 times 3 = 21 + 8= 29

4 0
3 years ago
Cho and Jeff each bought a used bike. Jeff's bike was not on sale and cost the same amount as the
antiseptic1488 [7]
The right answer for the question that is being asked and shown above is that: "A. $30." Cho's bike was on sale for $20 less than the original price, and her total cost was half of what Jeff paid. Jeff pay A. $30 <span>for his bike</span>

Jeff = x (original price)
Cho = x-20


8 0
3 years ago
Is 2/5 - (-5/6) positive, negative, or zero?
vovangra [49]

Answer:

Positive

Step-by-step explanation:

2/5 - (-5/6) = 1 7/30

7 0
3 years ago
(A) find F(x) for the indicated values of x, if possible
dem82 [27]

Answer:

A) The indicated values of F(x) for x=-3 and x=5 are F(-3)=-27  and F(5)=125

B) The domain of f is the set of all real numbers

Step-by-step explanation:

Given that the function F is defined by

F(x)=x^3 for x=-3,5

A) To find F(x) for the indicated values of x :

Given F(x)=x^3 for x=-3,5

  • Put x=-3 in the given function

F(-3)=(-3)^3

=(-3)\times (-3)\times (-3)

=-27

Therefore F(-3)=-27

  • Put x=5 in the given function

F(5)=(5)^3

=(5)\times (5)\times (5)

=125

Therefore F(5)=125

The indicated values of F(x) for x=-3 and x=5 are F(-3)=-27  and F(5)=125

B) To find the domain of f :

The domain of the f in the given expression is the set of all real numbers except where the expression x^3 is undefined. In this case, there is no real number that makes the expression undefined.

The domain of f is the set of all real numbers

8 0
3 years ago
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