Twenty percent of all telephones of a certain type are submitted for service while under warranty. Of these, 70% can be repaired, whereas the other 30% must be replaced with new units. If a company purchases ten of these telephones, what is the probability that exactly two will end up being replaced under warranty?
Answer:
The required probability is 0.09875
Step-by-step explanation:
From the given information;
the probability of repairing the telephones = 0.70
the probability of the replaced = 0.30
Suppose we consider Mto denotes the telephone that is submitted for service while under warranty and must be replaced.
Then;
p = P(S) = P(replaced | submitted) P(submitted)
= 0.30 × 0.20
= 0.06
Now, the probability that exactly two will end up being replaced under warranty given that it assumes a binomial distribution where n = 10 and p = 0.06
[tex]P(X=2)=\bigg (^{10}_{2}\bigg) 0.06^2(1-0.06)^{10-2}[/tex]
[tex]P(X=2)=\dfrac{10!}{2!(10-2)!}\times 0.06^2\times (0.94)^{8}[/tex]
[tex]\mathbf{P(X=2)=0.09875}[/tex]
Please help me:) i will give brainliest to the right answer<3
Answer:
The answer is does
Step-by-step explanation:
Answer: I believe it's "does not."
Step-by-step explanation:
But I'm sorry if I'm wrong!!
If 5 workers take 600 hours to finish a project, how long will it take 10 workers to complete the same project?
Which expression is equivalent to 12•2•3
Answer:
4 x 3 x 2 x 3
Step-by-step explanation:
4 x 3 = 12
12 x 2 = 24
24 x 3 = 36
It doesn't matter what order it will come out to be 36 in every situation, since PEMDAS isn't needed.
Side XY of triangle XYZ is extended to point W, creating a linear pair with ∠WYZ and ∠XYZ.
Triangle X Y Z. Point W extends from side X Y. Angle Z is 36 degrees, angle Y is x degrees, and exterior angle W Y Z is 100 degrees.
What is the value of x?
64
80
100
180
I NEED HELP ON SOME MORE PROBLEMS ANYONE WILLING TO HELP???
Answer:
80
Step-by-step explanation:
Answer:
B (also known as 30)
Step-by-step explanation:
hope this helps!
A goat is tied to the corner of a rectangular shed in a large field full of grass. The rope is 2 yards long and a plane view (from above) of the shed and field is shown below. Use this information for Parts A and B below.
Part A: Calculate the area of grass that the goat can eat.
Part B: What length of rope would enable the goat to eat 30 square yards of grass? Show all your reasoning.
Answer:
9.42 yd²3.57 ydStep-by-step explanation:
Part AThe area of circle with radius of 2 yd (the length of the rope) is:
A = π*r² = 3.14*2² = 12.56 yd²Since 1/4 of the circle is occupied by the shed, the area of the grass is:
12.56*3/4 = 9.42 yd²Part BLet the area be 30 yd², finding the r as per above formula:
3/4*3.14*r² = 30r² = 30*4/3*3.14r² = 12.74r = √12.74r = 3.57 ydWhat is the the value of x?
x/2
= 5
Answer:
10
Step-by-step explanation:
x/2 =5
2 x x/2 = 2 x 5
2x5 = 10
Find the indicated probability by using the complementation rule. A percentage distribution is given below for the size of families in one U.S. city. Size Percentage 2 39.9 3 24.4 4 20.1 5 10.8 6 3.3 7 1.5 A family is selected at random. Find the probability that the size of the family is 4 or more. Round results to three decimal places.
a. 0.156
b. 0.844
c. 0.357
d. 0.201
Answer:
The correct option is c.
Step-by-step explanation:
The percentage probability distribution is:
Size (X) Percentage
2 39.9
3 24.4
4 20.1
5 10.8
6 3.3
7 1.5
Total 100.0
Compute the probability that the size of the family is 4 or more as follows:
P (X ≥ 4) = P (X = 4) + P (X = 5) + P (X = 6) + P (X = 7)
= 0.201 + 0.108 + 0.033 + 0.015
= 0.357
Thus, the probability that the size of the family is 4 or more is 0.357.
The correct option is c.
please help! finding coordinates of a point :)
Answer:
Step-by-step explanation:
Follow the numbers.
what is 56+32 distributive property to factor out the greatest common factor.
How to find the value of x
It takes a motorboat twice as much to cover the distance going upstream as it takes it to cover the same distance going downstream. Write the ratio of the speed of the boat in still water to the speed of the current. PLS HELLLPPPP THIS IS DUE IN 3 MINS!!!!!!
Answer: Sorry for being late. Hope u passed!
Valery and Manuel ride their bikes 40 miles every Saturday. Valery rides at an Average speed of 9.6 miles per hour (mph)
exactly how many hours does it take Valery to ride her bike 40 miles?
Answer:Around 10 hours
Step-by-step explanation:
System of Equations in Three Variables Word Problem
Answer:
i think the answer is a number or multiple number and maybe a decimal.
Step-by-step explanation:
go to Tiger Algebra Solver
Please help me guys
Answer:
c
Step-by-step explanation:
In 4 hours, Luis rode 26 miles on his bicycle. What was
his hourly rate?
CTIONS: Use numbers, variables, and symbols to write
value of the variable.
Answer:
6.5 hours
Step-by-step explanation:
If Luis can ride 26 miles in 4 hours then you need to find out how much he can ride in 1 hour. Therefore you divide 26 miles into the hours he rode in to get 6.5
Therefore his hourly rate is 6.5
Given: m || n. What ism
Please help me I am confused
Answer:b
Step-by-step explanation:
Create a system of equations that includes one linear equation and one quadratic equation.
x^2 + 3x + 5 = x + 13
x^2 + 2x -8 = 0
(x+4) (x-2) = 0
x = -4 or x = 2
if x = -4, y = 9
if x = 2, y = 15
Part 2. Graph your system of equations and show the solution graphically to verify your solution.
how do I graph it
Answer:
Hello sir,
Step-by-step explanation:
If you are in a zoom meeting and want to get out of work tell me the code.
Please help me fast!!!!!
Answer:
75
Step-by-step explanation:
If both factors are negative then the product is positive.
Answer: -75
Step-by-step explanation: 15 times 5 equals 75
which statements can be used to write an algebraic expression to represent the phrase? ( The product of number and eighteen )
check all that apply:
A. replace a number with a variable?
b. product represents addition
c. product represents multiplication?
d. the coefficient is 18.
e. the correct algebraic expression is 18t.
f. 18 is a veritable.
g. the correct algebraic expression is t/18.
Answer:
a e f and g I think this because it has to be then they say that then ya
A triangle has angles that measure 54.6° and 17.8°. Which equation can be used to find the value of x, the measure of the third angle in the triangle?
Answer:
58.6 + 17.8 + x = 180
Step-by-step explanation:
hope this helps
A chef at a restaurant uses 17 pounds of butter each day. About how many grams does the chef use each day?
answer
7711.07
Step-by-step explanation:
The chef uses 7,711.03 grams each day at a restaurant.
How to convert Pounds to Grams?The methodology to convert Pounds to Grams is relatively simple. To convert Pounds to Grams, you must multiply the unit by 453.59.
For example, if you have to convert 5 Pounds to Grams, you need to multiply 5 by 453.59.
A chef at a restaurant uses 17 pounds of butter each day.
We have to determine the number of grams the chef uses each day.
Since 1 pound (lb) is equal to 453.59 grams (g).
So 17 pounds = 453.59 × 17 = 7,711.03 grams
Thus, the chef uses 7,711.03 grams each day.
To learn more about the unit conversion click here:
https://brainly.com/question/12792843
#SPJ2
Please help me look at image
3a / b²
....................................
Answer:
3a/b^2 is the simplified answer
GIVING BRAINLIEST IF CORRECT PLEASE HELP ASA[P
Answer:
Step-by-step explanation:
1: Green because it has more sections than the other colors
2: 4/8
Hope this helps!
Answer:
A) green
B) 4/8
brainliest please
Simplify 7.6 - 23
help me pleaseeee
Answer:
-15.4
Step-by-step explanation:
Simply just means "solve" or "make the equation shorter"
Answer:-15.4
Step-by-step explanation:
what is 2+2 my brain has been in circles about this
Answer:
hey welcome to Brainly, and 2 + 2 = 4
Step-by-step explanation:
2+2=4
3+3=6
4+4=8
5+5=10
and so on just keep adding 2
help, brainliest to whoever answers
graph 3x-2y=6 how do you graph this in algebra
Answer:
I don't have algebra but I suggest looking it up and it might show you at the very top.
Step-by-step explanation:
Hope this helps you:)
Use the expression 6.7s - (10÷2) +15 to answer 9–10. 9. Which part of the expression represents a quotient? Describe its parts. 10. Which part of the expression represents a product of two factors? Describe its parts. 9. The part of the expression that represents a quotient is. (Use the operation symbols in the math palette as needed. Do not simplify.)
Answer:
9. The part of the equation that represents a quoient is (10÷2) because inside the parentheses you solve the division equation and a quoitent is the answer to a division equation
10. The part of the expression that represents the product of two factors would be 6.7s because 6.7 is being multiplied by s, and a product is an answer to a multiplication problem
Step-by-step explanation:
9. The part of the equation that represents a quotient is (10÷2). 10. The part of the equation that represents the product of two elements is 6.7s.
What is the algebraic expression?Algebraic expressions are mathematical statements with a minimum of two terms containing variables or numbers.
The expression is given in the question, as follows:
6.7s - (10÷2) +15
9. The part of the equation that represents a quotient is (10÷2) since the division equation is solved inside the parenthesis and a quotient is the answer to a division problem.
10. Here 6.7 is multiplied by s, the component of the equation that represents the product of two elements is 6.7s, and a product is an answer to a multiplication expression.
Learn more about the algebraic expression here :
brainly.com/question/21751419
#SPJ2
