The value of the test statistic is x² = 3.841.
Therefore option B is correct.
How do we calculate?Expected frequency for "Health insurance" and "Men"
= (80 * 70) / 110= 50.909
Expected frequency for "Health insurance" and "Women"
= (30 * 70) / 110 = 19.091
Expected frequency for "No health insurance" and "Men"
= (80 * 40) / 110
= 29.091
Expected frequency for "No health insurance" and "Women"
= (30 * 40) / 110 = 10.909
We find the chi-square statistic
χ² = Σ [(O - E)² / E]
χ² = [(50 - 50.909)² / 50.909] + [(20 - 19.091)² / 19.091] + [(30 - 29.091)² / 29.091] + [(10 - 10.909)² / 10.909]
= (0.081² / 50.909) + (0.909² / 19.091) + (0.909² / 29.091) + (0.081² / 10.909)
= 0.00131 + 0.04537 + 0.02784 + 0.00604
= 0.08056
We find the critical value for a 0.05 significance level and 1 degree of freedom = 3.841.
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complete question:
A survey conducted in a small business yielded the results shown in the table. Test the claim that health care coverage is independent of gender. Use a 0.05 significance level. What is the value of the test statistic?
Men Women
Health insurance 50 20
No health insurance 30 10
OA. x^2=0.1637
OB. x^2=8.263
OC. x^2 =3.841
OD. x^2 =5.821
The null hypothesis is that the laptop produced by HP can run on an average 120 minutes without recharge and the standard deviation is 25 minutes. In a sample of 60 laptops, the sample mean is 122 minutes. Test this hypothesis with the alternative hypothesis that average time is not equal to 120 minutes. What is the p-value?
The p-value can be calculated to test the null hypothesis that the average running time of HP laptops is 120 minutes against the alternative hypothesis that it is not equal to 120 minutes.
The p-value for testing the hypothesis that the average time for the HP laptops is not equal to 120 minutes can be calculated using a t-test. Given a sample mean of 122 minutes, a sample size of 60, a null hypothesis mean of 120 minutes, and a standard deviation of 25 minutes, we can calculate the t-value and find the corresponding p-value.
To calculate the t-value, we use the formula: t = (sample mean - null hypothesis mean) / (sample standard deviation / sqrt(sample size))
Plugging in the values, we get: t = (122 - 120) / (25 / sqrt(60))
Calculating the t-value, we find t ≈ 0.894
To find the p-value associated with this t-value, we can refer to a t-distribution table or use statistical software. The p-value represents the probability of observing a t-value as extreme as the one obtained, assuming the null hypothesis is true.
Since the p-value (0.757) is greater than the commonly used significance level of 0.05, we fail to reject the null hypothesis. This suggests that there is not enough evidence to conclude that the average running time of HP laptops is significantly different from 120 minutes.
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express these fractions in decimals.
\(13 \1000 \frac{?}{?} \)
We can write the fraction as a decimal -
13001.5
What are fractions?A fraction represents a part of a whole or, more generally, any number of equal parts
Given is the fraction as -
13000\(\frac{3}{2}\)
We can write the fraction as a decimal -
13000\(\frac{3}{2}\)
13000\(\frac{3}{2}\) = (2 x 13000 + 3)/2
13000\(\frac{3}{2}\) = (26000 + 3)/2
13000\(\frac{3}{2}\) = 26003/2
13000\(\frac{3}{2}\) = 13001.5
Therefore, we can write the fraction as a decimal -
13001.5
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How do you calculate national income statistics?
Natiοnal Incοme statistics = Tοtal Rent + Tοtal Wages + Tοtal Interest + Tοtal Prοfit. gοοds and services prοduced in a cοuntry during a year is οbtained, which is called tοtal final prοduct. This represents Grοss Dοmestic Prοduct ( GDP ).
What is Natiοnal incοme?Natiοnal incοme is the tοtal incοme earned by all individuals and businesses in a cοuntry in a specific periοd οf time, usually a year. It includes all fοrms οf incοme such as wages, salaries, prοfits, rents, and interest earned. Natiοnal incοme is an impοrtant measure οf a cοuntry's ecοnοmic perfοrmance, as it reflects the tοtal οutput and incοme generated within the cοuntry's bοrders.
Natiοnal incοme statistics are calculated by measuring the tοtal value οf gοοds and services prοduced within a cοuntry during a given periοd οf time, typically οne year. The fοllοwing are sοme οf the key cοmpοnents οf natiοnal incοme statistics:
Grοss Dοmestic Prοduct (GDP): This is the tοtal value οf all gοοds and services prοduced within a cοuntry's bοrders in a given periοd οf time. It is calculated by adding up the value οf all final gοοds and services prοduced in a cοuntry during the year.
Grοss Natiοnal Prοduct (GNP): This is similar tο GDP, but alsο includes the value οf gοοds and services prοduced by a cοuntry's citizens and cοmpanies abrοad.
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A pipe cleaner lay across a wire shelf. The wires that make up the shelf are parallel, and the pipe cleaner is a transversal. The parallel wires are labeled a, b, and, c, and the angles are labeled with numbers.
The measure of one angle is 130°. Which statement is true regarding the 130° angle and angle 3?
They are same-side interior angles, so angle 3 measures 50°.
They are alternate interior angles, so angle 3 also measures 130°.
They are corresponding angles, so angle 3 also measures 130°.
They are alternate exterior angles, so angle 3 measures 50°.
Answer:
They are alternate interior angles, so angle 3 also measures 130°.Step-by-step explanation:
Notice that the pair of angles are inside parallels, and at different sides of the transversal. So, those angles are alternate interior angles by definition, which means they are congruent.
Therefore, the right answer is B.
-2m=6
Solve the equation using full working out
Answer:
m = -3
Step-by-step explanation:
-2m=6
Divide both sides by (-2).
m = 6 ÷ (-2)
m = -3
Add.
\dfrac{4}{6} + \dfrac{8}{6} =
6
4
+
6
8
=start fraction, 4, divided by, 6, end fraction, plus, start fraction, 8, divided by, 6, end fraction, equals
3
The fraction 4/6 + 8/6 is added to give 2
How to find the addition of the fractionThe addition of fraction is done as follows
check if the denominator of the both fraction are equal. In this case they are equal with a value of 6
4/6 + 8/6
the addition requires adding the numerators
= (4 + 8) / 6
= 12 / 6
= 2
adding the fractions gives a value of 2
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A triangular prism is 11.2 meters long and has a triangular face with a base of 11 meters and
a height of 11 meters. What is the volume of the triangular prism?
cubic meters
Answer:
The volume of the triangular prism is 677.6 cubic meters.
Step-by-step explanation:
The formula for the volume of a triangular prism is:
\(\sf\qquad\dashrightarrow Volume \: (V) = \dfrac{1}{2} \times b\times h \times l \)
where:
b is the base of the triangular faceh is the height of the triangular facel is the length of the prismSubstituting the given values, we have:
\(\sf:\implies Volume \: (V) = \dfrac{1}{2} \times 11 \times 11 \times 11.2\)
\(\sf:\implies \boxed{\bold{\:\:Volume \: (V) = 677.6\: meters^3\:\:}}\:\:\:\green{\checkmark}\)
Therefore, the volume of the triangular prism is 677.6 cubic meters.
Greetings! ZenZebra at your service, hope it helps! <33
Solve 5 vx - 6 = -20
O x= -10
O x = 10
O x = 22
No solution
Answer:
It is a hyperbole.
Step-by-step explanation:
5 v x - 6 = -20
v x = -14/5
v≠0 , x = -14/(5 v)
v = -14/(5 x)
f(x)=ax+b,f(3)=3 and f(2)=1 find the value of a and b
Answer:
a=2, b=-3
Step-by-step explanation:
f(x) = ax+b
f(3)=3, 3a+b=3
f(2)=1, 2a+b=1
Solving these two equations, we get a=2, b=-3
What are the x-intercepts of the function f(x)=2x2−7x−4 ?
Answer:
x=0
Step-by-step explanation:
What is the factored form of 8x²-36x-20?
Answer:
(4x + 2)( 2x - 10)
Step-by-step explanation:
Answer:
(8x+4) ( x-5)
Step-by-step explanation:
Well we can't factor out the 8 and solve because if we do the -20 and -36 will be decimals.
So we do this
8 * -20 = -160
We need to find 2 number that multiplies to -160 and adds to -36
-40 and 4 fit this category
they add to -36 and multiply to -160
Now we write the equation as
8x^2 - 40x + 4x -20
(8x^2-40x) (4x-20)
8x(x-5) + 4(x-5)
(8x+4) ( x-5)
Ling's graduation picnic will cost $6 if it has 3 attendees. If there are 4 attendees, how much will Ling's graduation picnic cost? Solve using unit rates.
Answer:
I think it will cost $8 in total sorry if wrong
Answer:
$8
Step-by-step explanation:
The cost of 3 attendees is $6. This means that it costs $2 per person to attend.
Therefore, the unit rate is $2/1.
To find the cost of 4 attendees, multiply the unit rate by 4.
$2/1 × 4 = $8
Hope that helps.
Evaluate the expression - 14 : 2 – 15
Answer:
2 - 15 = -13
Step-by-step explanation:
Use the website, Math w a y or Desmos! It helps!
find a differnetial equation that corresponds to the given direction field. consider differntial equations of the form of y
To find a differential equation that corresponds to a given direction field, we need to examine the slope of the direction field at different points.
Let's consider a direction field where the slope at each point is y. This means that at each point, the slope of the tangent line is equal to the y-coordinate of that point.
To express this as a differential equation, we can use the derivative notation. The derivative of y with respect to x is denoted as dy/dx. Since the slope at each point is y, we can write:
dy/dx = y
This is a first-order linear homogeneous differential equation, known as the exponential growth or decay equation. It represents a function whose rate of change is proportional to its current value.
The differential equation that corresponds to the given direction field with a slope of y is dy/dx = y. This equation describes exponential growth or decay depending on the sign of y.
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PLEASE HELP!! Photo below
You are shopping for single-use cameras to hand out at a party. The daylight cameras cost $2.75 and the flash cameras cost$4.25. You must buy exactly 20 cameras and you want to spend between $65 and$75, inclusive. Write and solve a compound inequality for this situation. Then list all the solutions that involve whole numbers of cameras.
The compound inequality for the given situation is $2.75x + $4.25y ≥ $65 and $2.75x + $4.25y ≤ $75, where x represents the number of daylight cameras and y represents the number of flash cameras.
To solve this compound inequality, we need to find the values of x and y that satisfy both conditions. The inequality $2.75x + $4.25y ≥ $65 represents the lower bound, ensuring that the total cost of the cameras is at least $65. The inequality $2.75x + $4.25y ≤ $75 represents the upper bound, making sure that the total cost does not exceed $75.
To list the solutions involving whole numbers of cameras, we need to consider integer values for x and y. We can start by finding the values of x and y that satisfy the lower bound inequality and then check if they also satisfy the upper bound inequality. By trying different combinations, we can determine the possible solutions that meet these criteria.
After solving the compound inequality, we find that the solutions involving whole numbers of cameras are as follows:
(x, y) = (10, 10), (11, 8), (12, 6), (13, 4), (14, 2), (15, 0), (16, 0), (17, 0), (18, 0), (19, 0), (20, 0).
These solutions represent the combinations of daylight and flash cameras that fulfill the requirements of buying exactly 20 cameras and spending between $65 and $75.
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(Question 1)
State The Slope
Answer: \(\frac{2}{3}\)
Step-by-step explanation:
Since we are given two clear coordinate points on the graph, we can use the "rise over run" method. Starting at (0, 0), we will count 2 units up and 3 units right to (3, 2). This gives us a slope of 2 over 3 ("rise over run).
help me on this one please
Answer:
615.8
Step-by-step explanation:
Circle area = π * r² = π * 196 [mcm²] ≈ 615.8 [cm²]
Answer:
Area is 616 square centimeters.
Step-by-step explanation:
Area of Circle
\(A = \pi r^2\)
A ... area
r ... radius
Given
r = 14 cm
Use formula.
\(A = \pi r^2\)
\(A = \pi (14 \text{ cm})^2\)
\(A = \pi (196) \text{ cm}^2\)
Use \(\frac{22}{7}\) for \(\pi\), since they tell you to use that in instructions.
\(A = (\frac{22}{7}) (196) \text{ cm}^2\)
\(A = 616 \text{ cm}^2\)
Which function is increasing on the interval (-∞, ∞)?
O A. g(x) = -4(2^x)
O B. f(x) = -3x + 7
O c. h(x) = 2^x - 1
O D. j(x) = x² + 8x + 1
Which function is growing on the (-, ) interval? O A. g(x) = "-4(2^x)" O B. f(x)= "-3x"+7 O C. h(x)= 2x—1 O D. j(x)= x2 + 8x+1
Try searching for Which function is rising on the range (-, ) instead. O A. g(x) = -4(2^x) O B. f(x) = -3x + 7, O c. h(x) = 2x - 1, and O D. j(x) = x2 + 8x + 1.
Which function is increasing on the interval (- ∞ ∞?
Image result for Which function is increasing on the interval (-∞, ∞)? O A. g(x) = -4(2^x) O B. f(x) = -3x + 7 O c. h(x) = 2^x - 1 O D. j(x) = x² + 8x + 1
Since, x and y are arbitrary values, therefore, f (x) < f (y) whenever x < y. Therefore, the interval (-∞, ∞) is a strictly increasing interval for f(x) = 3x + 5
The interval is increasing if the value of the function f(x) increases with an increase in the value of x and it is decreasing if f(x) decreases with a decrease in x.
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What is the surface area of the right cone below?
A. 52 units2
O B. 1047 units2
C. 6870 units2
D. 5471 units2
First find height using Pythagorean theorem.
\(h^2+4^2=13^2\implies h=\sqrt{153}\approx12.37\).
Then use cone surface area formula and compute the result:
\(A=\pi r(r+\sqrt{h^2+r^2})\approx\boxed{68\pi}\mathrm{units^2}\).
Hope this helps.
I will give Brainliest!!
Answer:
5.8 h po salamat
salamat po
Simplify.
4(3y+2)-11
Answer:
12 y − 3
Step-by-step explanation:
4(3y+2)-11
Expand 4(3y+2): 12y+8
12y+8-11
=12y-3
Please help I don’t understand this problem!
the second one √72= 8.48 and the square root of √83=9.11 pi^2 = 9.86
when you put this in order by the decimal you get
8.48, 8.7, 9.11, 9.25, 9.86 which is really √72, 8.7, √83, 9.25, pi^2
Hurry please!!!!
Which type of transformation is described by (x, y) + (x+2, y+3)?
(А)
a translation 2 units to the right and 3 units down
(В
a translation 2 units to the left and 3 units down
a translation 2 units to the right and 3 units up
D
a translation 2 units to the left and 3 units up
(x, y) → (x+2, y+3) means a translation 2 units to the right and 3 units up.
What is transformation?Transformations are changes done in the shapes on a coordinate plane by rotation, reflection or translation.
here, we have,
Given the rule of transformation:
(x, y) → (x+2, y+3)
If we move horizontally 2 units to the right, 2 is added to the x-coordinate of any given point, and then 3 units up.
In other words,
(x, y) → (x+2, y+3) means Translation 2 units right and 3 units up.
For example,
Let say if we have the point A(4, 5)
Using the translation rule:
(x, y) → (x+2, y+3)
A(4, 5) → A'(4 + 2, 5 + 3) → A'(6, 8)
Therefore, the new position of A(4, 5) after translating 3 units right and 2 units up would be: A'(6,8).
Hence, (x, y) → (x+2, y+3) means a translation 2 units to the right and 3 units up.
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Consider the graph of the linear equation 2x - 5y = 10.
x-intercept=
y-intercept =
slope=
Answer:
x-intercept= (5,0)
y-intercept= (0,-2)
Slope= 2/5
Step-by-step explanation:
Triangle ABC id isoceles. What is the measure of C?
The ratio of the measures of the three angles in a triangle is 2:9:4. Find the measures of the angles.
Answer:
Let the three angles be 2x,9x & 4x
By the problem,2x+9x+4x=180
15x=180
x=180/15
x=12
there fore the angles are
2x= 2*12=24°
9x=108°
4x=48°
Step-by-step explanation:
William Beville's Computer Training School in Richmond stocks notebooks for sale and would like to reduce its inventory cost by determining the optimal number of notebooks to order in each order. The ordering cost for each order is $27. The annual demand is 19455 units. The annual cost of holding each unit is $6. Each notebook costs $12. The school has a year of 250 working days. When a new order of notebooks is made, the supplier takes 4 days to deliver it.1. What inventory management model should we use to solve this problem?
Model Economic Quantity to Order
Model for discount purchases
Model Economic Quantity to Produce
Model to handle dependent demand
2. What is the optimal number of notebooks to make in each order? 3. What is the annual ordering cost (AOC)? 4. What is the Annual Holding Cost (AHC)? 5. What is the annual product cost (APC)? 6. What is the annual total cost of managing inventory (ATC) 7. What would be the total number of orders in the year (N)? 8. What would be the estimated time between each order (T)? 9. What is the daily demand? 10. What is the reorder point (ROP)? ____
units.
The inventory management model that should be used to solve this problem is the Model Economic Quantity to Order (EOQ) model. The optimal number of notebooks to make in each order is 590 units. The annual ordering cost (AOC) is approximately $892.20. The Annual Holding Cost (AHC) is $3540. The annual product cost (APC) is $233,460. The annual total cost of managing inventory (ATC) is approximately $237,892.20. The total number of orders in the year (N) is 33. The estimated time between each order (T) is approximately 7.58 days. The daily demand is approximately 77.82 units. The reorder point (ROP) is approximately 311 units.
The inventory management model that should be used to solve this problem is the Model Economic Quantity to Order (EOQ) model.
To find the optimal number of notebooks to make in each order, we can use the EOQ formula:
EOQ = √[(2 * Demand * Ordering Cost) / Holding Cost]
EOQ = √[(2 * 19455 * 27) / 6]
EOQ ≈ 589.96
Since the number of notebooks must be a whole number, the optimal number to order would be 590 notebooks.
The annual ordering cost (AOC) can be calculated by dividing the annual demand by the EOQ and multiplying it by the ordering cost:
AOC = (Demand / EOQ) * Ordering Cost
AOC = (19455 / 590) * 27
AOC ≈ $892.20
The Annual Holding Cost (AHC) is calculated by multiplying the EOQ by the holding cost per unit:
AHC = EOQ * Holding Cost
AHC = 590 * 6
AHC = $3540
The annual product cost (APC) is calculated by multiplying the annual demand by the cost per unit:
APC = Demand * Cost per unit
APC = 19455 * 12
APC = $233,460
The annual total cost of managing inventory (ATC) is the sum of the annual ordering cost, annual holding cost, and annual product cost:
ATC = AOC + AHC + APC
ATC = 892.20 + 3540 + 233460
ATC ≈ $237,892.20
The total number of orders in the year (N) can be calculated by dividing the annual demand by the EOQ:
N = Demand / EOQ
N = 19455 / 590
N ≈ 33
The estimated time between each order (T) can be calculated by dividing the number of working days in a year by the total number of orders:
T = Number of working days / N
T = 250 / 33
T ≈ 7.58 days
The daily demand is calculated by dividing the annual demand by the number of working days in a year:
Daily Demand = Demand / Number of working days
Daily Demand = 19455 / 250
Daily Demand ≈ 77.82 units/day
The reorder point (ROP) is the number of units at which a new order should be placed. It can be calculated by multiplying the daily demand by the lead time (time taken for the supplier to deliver the order):
ROP = Daily Demand * Lead Time
ROP = 77.82 * 4
ROP ≈ 311.28 units
Therefore, the reorder point would be approximately 311 units.
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Solve the following equation below.
Answer:
x=3 C
Step-by-step explanation:
5x-13=-3x+11
8x-13=11
8x=24
x=3
Answer:
the answer is x=3
Step-by-step explanation:
i hope this help you
Both circles have the same center. What is the area of the shaded region?
The area of the shaded region is
3179.29 squared centimetersHow to find the area of the shaded regionThe area of the shaded region is solved using the formula
Area of shaded region = π(R^2 - r^2)
where
R = radius of the bigger circle = 22 + 12 = 34 cm
r = radius of the smaller circle = 12 cm
plugging in gives
Area of shaded region = π (34^2 - 12^2) = 3179.29 squared centimeters
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