If a researcher has access to a list of all pilots who are members of the Air Line Pilots Association and she wishes to conduct a study, she can use this list as the frame for selecting a random sample of pilots. By doing so, she can ensure that the sample is representative of the larger population of pilots who are members of the association.
Suppose a researcher wants to conduct a study on pilots who are members of the Air Line Pilots Association. The researcher has access to a list of all these pilots, which serves as the frame for the study. In order to randomly select a sample of pilots, the researcher can follow these steps:
1. Assign a unique number to each pilot on the list.
2. Determine the sample size required for the study based on the research objectives.
3. Use a random number generator or a random sampling technique (e.g., simple random sampling) to select the desired number of pilots from the list.
4. Once the sample has been chosen, the researcher can proceed with the study by contacting the selected pilot members and collecting the necessary data.
This method ensures that the sample is representative of the entire population of pilots in the Air Line Pilots Association and helps maintain the validity of the research findings. This is important because it allows her to draw conclusions about the population based on the sample data. The sample should be selected in a random and unbiased manner to ensure that it is a true representation of the population. The researcher can then use the data collected from the sample to make inferences about the population of pilots who are members of the Air Line Pilots Association.
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Rewrite the following polynomial in standard form.
9x +x^2- 1/10
Answer:
x^2+9x−1/10
hopefully this helps, it's just writing it backwards
Help me please......
Answer:
A is the correct answer
Express the negations of the proposition using quantifiers and in English "There is a student in
this class who has never seen a computer"
The negation of the proposition posed the statement is:
"Every student in this class has seen a computer."
What is the express the negations of the proposition using quantifiers and in English "There is a student in this class who has never seen a computer"?The negation of the proposition "There is a student in this class who has never seen a computer" can be expressed using quantifiers as follows:
∀ x ∈ S, ∃ y ∈ C (x has seen y)
This means "For all students x in the class S, there exists a computer y in the set of computers C such that x has seen y."
In English, the negation of the proposition can be expressed as "Every student in this class has seen a computer."
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3PLEASE HELP ME THIS IS URGENT I WILL GIVE BRAINLIEST
Answer: x= 7191.509 ft
Step-by-step explanation:
Sin9/1 = 1125/x
X/1 = 1125/sin9
write the intercept form for each. X Y 0 6 1 10 2 14slope M=y-intercept=b=slope-intercept form
Given the set of values, you have to determine the y-intercept, slope, and the equation that corresponds to de relationship on the table.
The slope-intercept form is
\(y=mx+b\)Where
m represents the slope
b represents the y-intercept (is the y-coordinate of the point corresponding to the y-intercept)
The y-intercept of any function in the coordinate system is the point where the line intercepts the y-axis, at this point the x-coordinate is equal to zero. You can determine this value directly from the table, the ordered pair (0,6) corresponds to the y-intercept coordinates.
So "b = 6"
To determine the slope of the line, m, you need to use two points of the line and the following formula:
\(m=\frac{y_1-y_2}{x_1-x_2}\)Where
(x₁,y₁) are the coordinates of one point on the line
(x₂,y₂) are the coordinates of a second point on the line
You can use any two points of the line to calculate the slope, I will use (2,14) and (1,10)
\(\begin{gathered} m=\frac{14-10}{2-1} \\ m=\frac{4}{1} \\ m=4 \end{gathered}\)The slope of the line is m=4
Finally, you have to replace the values of the slope and y-intercept in the formula to determine the equation of the line in slope-intercept form:
\(y=mx+b\)For b=6 and m=4
\(y=4x+6\)-7 + (-9) - (-11) -2
Pls heeelp plsss plsss
What is the simplified form of the following expression?
A certain identification number is a sequence of five digits. (a) How many identification numbers are possible? Incorrect: Your answer is incorrect. numbers (b) How many of them begin with either 023 or 003? numbers (c) How many identification numbers are possible if no two adjacent digits are the same? (For example, 123-45 is permitted, but 123-34 is not.) numbers
Answer:
100,000
200
65,610
Step-by-step explanation:
Given that:
Identification number = 5 digits
A.) number of identification numbers possible :
Possible digits : 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
Total digits possible = 10
Each digit can be any of the 10;
Hence,
10 * 10 * 10 * 10 * 10 = 100,000 possibilities
B.) How many of them begin with either 023 or 003
023 or 003
0 or 0 = 1 option
2 or 0 = 2 options
3 or 3 = 1 option
Other digits will have any of the 10 options :
1 * 2 * 1 * 10 * 10 = 200
3.) if no two digits that follow each other are the same, then only the first digit has 10 options with the other 4 each having 9
10 * 9 * 9 * 9 * 9 = 65,610
please help me find the area of the composite figure :)
Find the length of side x in simplest radical form with a rational denominator.
60°
V8
30
X
Answer:
\( \sqrt{6} \)
Step-by-step explanation:
We first divide sqrt8 by to 2.
Next we multiply that by sqrt3
\( \sqrt{8} \ \div 2 \times \sqrt{3} \)
suppose a machine requires a specific type of battery that lasts an exponential amount of time with mean 25 hours. as soon as the battery fails, you replace it immediately. if you have 50 such batteries, estimate the probability that the machine is still operating after 1300 hours. round your answer to three decimal places. save your answer as p4.
The estimated probability that the machine is still operating after 1300 hours is approximately 0.034.
To estimate the probability that the machine is still operating after 1300 hours, we can use the exponential distribution.
Given that the mean of the battery life is 25 hours, we can use the formula for exponential distribution:
\(P(X > t) = e^{-t/\mu}\)
Where X is the random variable representing the battery life, t is the time, and μ is the mean battery life.
we need to find the parameter λ, which is the rate parameter and is equal to 1/μ. In this case, λ = 1/25.
we want to find the probability that the machine is still operating after 1300 hours.
P(X > 1300) = \(e^{-1300/25}\)
To estimate this probability, we can substitute the value of λ and calculate it using a calculator or software.
P(X > 1300) ≈ 0.034
Rounded to three decimal places, the estimated probability that the machine is still operating after 1300 hours is approximately 0.034.
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Complete question:
Suppose a machine requires a specific type of battery that lasts an exponential amount of time with mean 25 hours. As soon as the battery fails, you replace it immediately. If you have 50 such batteries, estimate the probability that the machine is still operating after 1300 hours. Round your answer to three decimal places. Save your answer as p4 . Prompt 1: Suppose 30 numbers are selected at random from the interval [0, 1]. That is, X; -U[0, 1] for i = 1, 2,...30. Given X = (1/30) L. X; estimate P(0.5 < X <0.6). (Round your answer to three decimal places.)
Which of the following illustrates the truth value of the given conditional statement?
p. 10 >7
9.10 > 4
OFF - F
OTT-T
OTE - F
O FT-T
Answer:
TT➪T
Step-by-step explanation:
If 1 person uses approximately 1.5 square feet and if 1 mile = 5280 ft., estimate how many people can fit in an area that is 5 feet deep and 1 mile long.
Answer:
17,600 people
Step-by-step explanation:
If 1 person uses approximately 1.5 square feet and if 1 mile = 5280 ft.,
Ratio = 1/1.5
1 mile = 5280 ft.
Area given = 5 feet deep and 1 mile long.
Area of the crowd = 5 feet × 5280 feet
= 26400 square feet.
We are asked to estimate how many people can fit in an area that is 5 feet deep and 1 mile long if 1 person uses approximately 1.5 square feet
1.5 square feet = 1 person
26400 square feet =
26400 square feet/1.5 square feet
= 17,600 people
6x+1/2(12x-8)=3x-31 what is the answer?
Answer:
x=−3
Step-by-step explanation?
i did the math
Can someone help me find the amount on year 11
Answer:
525 dollars
Step-by-step explanation:
simple interest yearly ( year 11 does not count because the question asking at the amount at the beginning of year 11)
interest=300*0.075*10= 225
the amount in the account : 300+225=525 dollars
pls help solve math problem!!! lots of points
find the radius of convergence, r, of the series.[infinity](−9)nnnxnn = 1
The radius of convergence, r, of the series is 1/9.
To obtain the radius of convergence, we can use the ratio test.
The ratio test states that if we have a power series of the form ∑(aₙxⁿ), then the radius of convergence, r, is given by:
r = lim┬(n→∞)|aₙ/aₙ₊₁|
In this case, we have the series ∑((-9)ⁿⁿ/n!)xⁿ.
Let's apply the ratio test to find the radius of convergence.
We start by evaluating the ratio:
|aₙ/aₙ₊₁| = |((-9)ⁿⁿ/n!)xⁿ / ((-9)ⁿ⁺¹⁺¹/(n+1)!)xⁿ⁺¹|
= |-9ⁿ⁺¹⁺¹xⁿ / (-9)ⁿⁿ⁺¹ xⁿ⁺¹(n+1)/n!|
Simplifying the expression:
|aₙ/aₙ₊₁| = |(-9)(n+1)/(n+1)|
= 9
Taking the limit as n approaches infinity:
lim┬(n→∞)|aₙ/aₙ₊₁| = 9
Since the limit is a finite positive number (9), the radius of convergence is given by:
r = 1 / lim┬(n→∞)|aₙ/aₙ₊₁| = 1/9
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Please hurry and i will mark you brainiest
Answer:
it's option 3
Step-by-step explanation:
1/6y+1/6y gives you 2/6y or 1/3y simplified
12/6=2
so1/6y+1/6(y+12)-2= 1/3
Use open number one to subtract the decimals 9.59 - 6.85 Math 180
The solution is 2.74.
What is Subtraction?Subtraction is the process of taking away a number from another. It is a primary arithmetic operation that is denoted by a subtraction symbol (-) and is the method of calculating the difference between two numbers.
here, we have,
given that,
9.59 - 6.85
=2.74
Hence, the solution is 2.74.
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the volume of a cuboid is 480cm cube,it's breadth and height are 8cm are 6cm respectively find its length
solve.
h + 13.1 = -13.1
h = ?
Answer:
Step-by-step explanation:
Here you go mate
Step 1
h + 13.1 = -13.1 Equation
Step 2
h + 13.1 = -13.1 simplify
Step 3
h + 13.1 = -13.1 Add -13.1 to both sides
h=-26.2
answer
26.2
Determine the algebraic degree of the following (7,7)-function, where a is a primitive element of F27. Is it linear, affine, quadratic or cubic? Explain your answer. (5%)
F(x) = alpha ^ 49 * x ^ 37 + alpha ^ 52 * x ^ 28 + alpha ^ 81 * x ^ 13 + alpha ^ 26 * x ^ 9 + alpha ^ 31 * x
The highest exponent of x in F(x) is 37, which means the algebraic degree of the function is 37.
The function F(x) is a cubic function.
Here, we have,
given function is:
F(x) = α⁴⁹ * x³⁷ + α⁵² * x²⁸ + α⁸¹ * x¹³ + α²⁶ * x⁹ + α³¹ * x
To determine the algebraic degree of the given (7,7)-function F(x), we need to find the highest exponent of x in the function.
F(x) = α⁴⁹ * x³⁷ + α⁵² * x²⁸ + α⁸¹ * x¹³ + α²⁶ * x⁹ + α³¹ * x
The algebraic degree of a polynomial function corresponds to the highest exponent of the variable in the function.
Linear functions have an algebraic degree of 1, affine functions have an algebraic degree of 1 or 0, quadratic functions have an algebraic degree of 2, and cubic functions have an algebraic degree of 3.
so, we get,
The highest exponent of x in F(x) is 37, which means the algebraic degree of the function is 37.
Therefore, the function F(x) is a cubic function.
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Find the smallest number a such that A + BB is regular for all B> a.
The smallest number a such that A + BB is regular for all B > a can be determined by finding the eigenvalues of the matrix A. The value of a will be greater than or equal to the largest eigenvalue of A.
A matrix A is regular if it is non-singular, meaning it has a non-zero determinant. We can consider the expression A + BB as a sum of two matrices. To ensure A + BB is regular for all B > a, we need to find the smallest value of a such that A + BB remains non-singular. One way to check for singularity is by examining the eigenvalues of the matrix A. If the eigenvalues of A are all positive, it means that A is positive definite and A + BB will remain non-singular for all B. In this case, the smallest number a can be taken as zero. However, if A has negative eigenvalues, we need to choose a value of a greater than or equal to the absolute value of the largest eigenvalue of A. This ensures that A + BB remains non-singular for all B > a.
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Which of the following is equivalent to 2/5 x 3/8?
A. 3/8 / 2/5
B. 2/5 / 3/8
C. 2/5 / 8/3
D. 5/2 / 8/3
Help me to do this set question
Select all pairs of complementary angles in the diagram.
Answer:
Step-by-step explanation:
Complementary angles sum to 90 degrees.
< BAF and < BFA
<CDE and < CED.
Supplementary ( sum to 360):
< FBC and <BFE
<BCE and < FEC.
Plz plz plz plz plz help peep
2³-4²
= 8-16
=-8
Hopefully this helps! Good luck! :)
Answer:
128
Step-by-step explanation:
2³=8
4²=16
8x16=128
1. What is the surface area of just the BASE of a cone with a radius of 10 cm and a side length of 15 cm
The surface area of just the base of the cone is approximately 314.16 cm^2.
The base of a cone is a circle, and the surface area of a circle can be calculated using the formula:
Surface Area of a Circle = π * radius^2
In this case, the radius of the base of the cone is given as 10 cm.
So, the surface area of just the base of the cone can be calculated as:
Surface Area of Base = π * (10 cm)²
Surface Area of Base = π * 100 cm²
∴ Surface Area of Base ≈ 314.16 cm²
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Please help thanks!!!
\(probablity \: of \: \: six = 29 : 150\)
hope it helps you ❣❣ Mark me as brainliestin fraction=29/150