Answer:
P(25 < x < 37) = 0.77
Step-by-step explanation:
Given - If a Variable has a normal distribution with mean 30 and standard deviation 5
To find - find the probability that the variable will be between 25 and 37.
Proof -
Given that,
Mean, μ = 30
S.D, σ = 5
Now,
[tex]z = \frac{x-\mu}{\sigma}[/tex] ~ N(0,1)
Now,
P(25 < x < 37)
= [tex]P(\frac{25 - 30}{5} < z < \frac{37 - 30}{5} )[/tex]
= P(1 < z < 1.4)
= P(z < 1.4) - P(z < -1)
= 0.9192 - 0.1587
= 0.7605
≈ 0.77
∴ we get
P(25 < x < 37) = 0.77
In a bag of 4 red balls, 6 yellow balls
and 2 blue balls. What is the
probability of picking a blue ball?
Answer:
probability of selecting blue ball is equal to the number of blue balls over the total balls which is 2÷12
Select all of the expressions that are equivalent to 6+12x
Applicants for the University of Statland take two tests, one for writing ability and the other on critical thinking, and normalised scores are recorded on each between 0 and 1. For a given applicant, let XX be the score on the writing test and YY the score on the critical thinking test. A model for the joint probability density function for the two test scores can be taken as:
Answer:
hello your question is incomplete attached below is the complete question
answer : 1
Step-by-step explanation:
Given Function:
F(x,y)=[tex]\left \{ {{1/4(2x+y)} \atop {0}} \right.[/tex] for 0<x<1, 0<y<2
elsewhere.
Evaluating the marginal density of the writing test score at point
X = 1/2 = 1/4 ( 4x + 2 ) = 1/4 ( 4 * 1/2 + 2 ) = 1
attached below is the detailed solution
There are risks associated with drinking potable water.
Please select the best answer from the choices provided
Answer:
Where are the choices? There is no choices
PLS HELP find the area of the shape below
Answer:
160
Step-by-step explanation:
hhegdfgeye7ehewhweeej
Find the mode of the data. 65, 65, 60, 62, 60, 69, 60, 68, 63, 66 mode =
Answer:
60
Step-by-step explanation:
The mode is the value which occurs the most in the set. We see that 60 occurs three times, 62 occurs once, 63 occurs once, 65 occurs twice, 66 occurs once, 68 occurs once, and 69 occurs once.
Thus, the mode is 60.
Answer:
The mode is 60
Step-by-step explanation:
The mode is the number that appears most in the set of data. 60 appears the most, appearing 3 times.
FREE BRANLIEST IF YOU GIVE RIGHT ANSWER WITH EXPLANATION!!!!!!!!!!! (wrong answers or incomplete answers will be tolerated and reported)
Answer:
600W = C
Step-by-step explanation:
First we must identify the relationship between weight of gold and cost of gold.
We can do this by dividing cost by corresponding weight.
7200 / 12 = 600
13200 / 22 = 600
19200 / 32 = 600
each proportion has an outcome of 600
Therefore Cost = Weight times 600 or C = 600W
When factoring polynomials, you should always do this step first:
a.
Factor by un-FOILing.
b.
Factor a Difference of Squares.
c.
Check for and factor out a GCF.
d.
Factor by Grouping.
Answer:
A,F
Step-by-step explanation:
If only 4 of your 15 employees showed up for a shift; what percent of the
employees came to work?
Answer: 26.6667%
Step-by-step explanation: :)
look at pic 10 pts will mark brainilest
C: ( 9 x 18) + (6 x 2)
D: (20 x 6) + (18 x 3)
E: (20 x 9) - (3 x 2)
PLS NEED HELP NO BITLYS
Answer:
m or minutes is the independent variable
h or height is the dependent variable
Step-by-step explanation:
independent variable is usually the x or the variable that you can create a number for, dependent variable is usually the y or the variable that you need to plug x in and solve for.
The Goodman Tire and Rubber Company periodically tests its tires for tread wear under simulated road conditions. To study and control the manufacturing process, 20 samples, each containing three radial tires, were chosen from different shifts over several days of operation, with the following results. Tread wear measurements are in hundredths of an inch. Sample Tread Wear 1 31 42 28 2 26 18 35 3 25 30 34 4 17 25 21 5 38 29 35 6 41 42 36 7 21 17 29 8 32 26 28 9 41 34 33 10 29 17 30 11 26 31 40 12 23 19 25 13 17 24 32 14 43 35 17 15 18 25 29 16 30 42 31 17 28 36 32 18 40 29 31 19 18 29 28 20 22 34 26 Assuming that these data were collected when the manufacturing process was believed to be operating in control, develop the R chart. Compute the upper and lower control limits for the R chart. (Round your answers to two decimal places.) UCL = LCL =
Answer:
LCL = 4.72
UCL = 18.08
Step-by-step explanation:
Sample size, n = 20
Sample _ tread wear, x __ Range
1 ______ 33.67 ___ 14
2______ 26.33 ___ 17
3 _____ 29.67 ____ 9
4 ______ 21 ______ 8
5 ______ 34 ______ 9
6 ______ 39.67 ___ 6
7 ______ 22.33 ___ 12
8 ______ 28.67 ___ 6
9 ______ 36 ______8
10 _____ 25.33 ___ 13
11 _____ 32.33 ____14
12 _____ 22.33 ___ 6
13 _____ 24.33 ___ 15
14 _____ 31.67 ___ 26
15 _____ 24 _____ 11
16 ____ 34.33 ____ 12
17 ____ 32 _______ 8
18 ____ 33.33 ____ 11
19 ____ 25 _______11
20 ___ 27.33 _____12
Sample mean, xbar = Σx / n = 29.167
Rbar = ΣR/ n = 11.4
The R chart control limit is given by :
Rbar(1 - 3(d3/d2))
From the R chart :
d3 = 0.729 ; d2 = 3.735
Hence,
LCL = 11.4(1 - 3(0.729/3.735))
LCL = 11.4(0.4144578) =
LCL = 4.72481892 = 4.72
UCL = 11.4(1 - 3(0.729/3.735))
UCL = 11.4(1.5855421)
UCL = 18.075180 = 18.08
Select the correct answer.
Solve the system of equations.
y= 2x + 3
y= x2 + 3x + 3
9514 1404 393
Answer:
A. (-3, -3) and (2,7)
Step-by-step explanation:
Read the points of intersection from the graph. They are ...
(-3, -3) and (2,7) . . . . matches choice A
20. A biologist studied the populations of geckos and salamanders at Huntington Beach State Park over
a five year period. The biologist modeled the populations, in thousands, with the following polynomials
where x is time, in years.
Geckos: 9.7 x 2 - 0.8x + 2.3
Salamanders: -1.1 x2 + 7.7 x + 5.4
Which of the following polynomials models the total number of geckos and salamanders at Huntington Beach State Park?
Answer: b
Step-by-step explanation:
The sum of the measures of the angles of a quadrilateral is 360°. Quadrilateral JKLM has one right angle. Use angle relationship and the measures given to find the measures of the angle K.
Answer:
Angle k is equal to 110°
Step-by-step explanation:
Because they are alternating angles
On a number line, 8.78 would be located . Check all that apply. A. between 8 and 9 B. to the right of 8.63 O C. between 7 and 8 D. to the left of 8.71
9514 1404 393
Answer:
A. between 8 and 9
B. right of 8.63
Step-by-step explanation:
See the attached. Numbers increase to the right, so 8.78 is right of both 8.63 and 8.71. The ones digit is 8, so 8.78 is between 8 and 9.
how to find the length of EF?
[tex]CD = \frac{HG + EF}{2} \Leftrightarrow EF = 2CD - HG[/tex]
[tex]2x - 2 = 2x - x + 3\\2x - 2x + x = 3 + 2\\x = 5[/tex]
[tex]EF = 2 * 5 - 2 = 10 - 2 = 8[/tex]
Answer: 8.
Answer:
EF=8
Step-by-step explanation:
HG=x-3
CD=x
EF=2x-2
Since HG is 3 less than CD, EF has to be 3 more than CD
x+3=2x-2
3+2=2x-x
5=x
x=5
HG=2
CD=5
EF=8
5 liters of water weighs 11 pounds. A bucket contains 143 pounds of water. How many liters of water are in the bucket
Answer:
65 liters
Step-by-step explanation:
11/5=2.2
143/2.2=65
pls answer quick, I need an answer.
Steve bought a triangular mat to cover a corner of his room.
Can someone answer this please?
Answer:
I think A.....................
What is the hypotenuse of a triangle with legs that are both 4 inches?
Answer:
5.66
Step-by-step explanation:
Rene is in the band. As a part of a fund raiser, she is selling tickets to a spaghetti dinner. The tickets cost $8 for adults and $5 for children. If Rene sold 100 total tickets for a total of $611, how many adult tickets did she sell?
Answer:
76 or 63
Step-by-step explanation:
Given: The tickets cost; Adults = $8, children = $5. Rene sold 100 total tickets for a total of $611
To find: How many adult tickets she sold
Solution: To find how many adult tickets Rene sold, divide the total amount of money made by selling the tickets by the cost for adult tickets
611 ÷ 8 = 76.4
In the closest tens place, Rene sold is 76 adult tickets or even 63
(Can Someone Help Answer This Problem) + No Links
Answer:
50 + 100n
Step-by-step explanation:
The cost is the cost of the visit plus the cost of the cavities
50 + 100n where n is the number of cavities
Answer:
P = 50 + 100*n
Step-by-step explanation:
1. The visit is $50
2. Additional cavity is $100
3. n cavities would cost 100*n
rolling an odd number on a six-sided die with its expected probability?
Answer:
The probability when rolling a regular six-sided dice that the score is an odd number is three-sixths or three out of six. Both three and six are divisible by three. Therefore, this fraction could be simplified to one-half. Three divided by three is equal to one.
The frame around a picture is worn and needs to be replaced. On the outsiders the rectangular frame measurements 5 inches by 7 inches. What is the outside perimeter of the frame?
17 inches
24 inches
35 inches
70 inches
plsss answer this
Answer:
24 inches
Step-by-step explanation:
we have 4 sides 2 of them are 5 and the other 2 are 7
7 + 7 = 14
and
5 + 5 = 10
Lastly,
10 + 14 = 24
The outside perimeter of the given its width and the length is 24 inches.
What is the perimeter?
A rectangle is a quadrilateral that has two diagonals of equal length that intersect each other. The perimeter of a rectangle is the distance round the rectangle.
Perimeter of a rectangle = 2 x (length + width)
2 x (5 + 7) = 24 inches
To learn more about the perimeter of a rectangle, please check: https://brainly.com/question/3205029
#SPJ2
which one of the following piecwise graphs is not a function
Answer:
Perhaps this could be answered, if the graphs were included.
Step-by-step explanation:
Determine if the situation is LINEAR or EXPONENTIAL.
• A hotel cost $120 for the first night, then $75 each additional night
Answer:
Liner
Step-by-step explanation:
The cost after the first night is steadily increasing at $75
Show all steps 2a=22
Answer:
Hello! answer: a = 11
Step-by-step explanation:
2 × 11 = 22 So therefore a = 11 HOPE THAT HELPS!
Divide by using long division:
(8x ^2+ 4x – 3) = (2x - 3)
Answer: Hello Luv......
The chosen topic is not meant for use with this type of problem. Try the examples below.
45665
8723
209÷32
Step-by-step explanation:
Hope this helps.
Mark me brainest please.
Anna ♥
look at pic 10 pts will mark brainilest
Answer:
33
Step-by-step explanation:
You find the area of each triangle and that is (4*3)/2 which is equal to 6 but because all four sides are the same size you would multiply 6 by 4 so 6*4=24 you must also find the area of the bottom and that would be 3*3= 9 then you'd add them together 24+9=33 i hope that this helps!