For a 95% confidence interval what would the sample size need to be as it's most conservative to have a 2% margin of error
Answer:
The size of the sample 'n' = 2401
Step-by-step explanation:
Step:1
Given that the margin of error = 2 % = 0.02
The margin of error is determined by
[tex]M.E = \frac{Z_{0.05} \sqrt{p(1-p)} }{\sqrt{n} }[/tex]
we know that the proportion
[tex]\sqrt{p(1-p)} < \frac{1}{2}[/tex]
Step:2
The margin of error is determined by
[tex]0.02 = \frac{1.96( \frac{1}{2} ) }{\sqrt{n} }[/tex]
[tex]\sqrt{n} = \frac{1.96}{2 X 0.02}[/tex]
√n = 49
Squaring on both sides, we get
n = 49 × 49
n = 2401
Final answer:-
The size of the sample 'n' = 2401
How do I isolate the “I” variable
Answer:
[tex] I = \pm \sqrt{\dfrac{P}{R}} [/tex]
Step-by-step explanation:
[tex] P = I^2R [/tex]
Divide both sides by R.
[tex] \dfrac{P}{R} = I^2 [/tex]
Switch sides.
[tex] I^2 = \dfrac{P}{R} [/tex]
Take the square root of both sides.
[tex] I = \pm \sqrt{\dfrac{P}{R}} [/tex]
For what value of x is line / parallel to line m in this figure?
Answer:
132
Step-by-step explanation:
The angle with a measure of 48 degrees and the angle labeled "x" are supplementary angles. Supplementary angles add up to equal 180
This means that we can find the value of the missing angle by subtracting the measure of the known angle from 180
So x = 180 - 48
180 - 48 = 132
Hence, x = 132
Find Side AB and round to the nearest tenth of a decimal
Answer:
AB = 8.0
Step-by-step explanation:
Law of Sines
AB/sin53 = 7/sin44
multiply both sides by sin53
AB = 7/sin44 * sin53
use calculator
AB = 8.047766798861355
Rounded
AB = 8.0
Which can be represented by the expression 17 – 2x? A. 17 less than twice a number B. the difference between 17 and twice a number C. a number x squared, subtracted from 17 D. 17 less than a number x squared
Answer:
b subtraction has a difference
Question 9 of 25
Suppose that a sample is taken from a population whose mean value is 48.
As the sample size increases, which value will the sample mean approach?
A. 51
B. 48
C. 54
D. 45
Answer:
B
Step-by-step explanation:
The Central Limit Theorem (something to look up!) says as the sample size increases, the sample mean approaches the population mean.
And orange falls of a display at a store and rolls 5 meters in 2.5 seconds.What is the average speed of the orange
Answer:
The orange moves at 2M/s
5/2.5=2
2meters/secon
The average speed of the orange is 2 m/sec.
Given that, orange falls off a display at a store and rolls 5 meters in 2.5 seconds.
We need to find the average speed of the orange.
What is the average speed formula?Average speed is the mean value of the speed of a body over a period of time. The formula for average speed is needed since the speed of a moving body is not constant and varies across a period of time. Even with varying speeds, the values of total time and the total distance covered can be used, and with the help of the formula for average speed, we can find a single value to represent the entire motion.
The formula for average speed is given as:
Average Speed = Total distance covered ÷ Total time taken
Now, average speed=5/2.5=2 m/sec.
Therefore, the average speed of the orange is 2 m/sec.
To learn more about the average speed visit:
https://brainly.com/question/17277454?referrer=searchResults
#SPJ2
PLEASE HELP DUE IN 30 MINS WILL MARK BRAINLIEST
Answer:
48.55
Step-by-step explanation:
The Basketball Boosters Club plans a pancake supper to raise $1,200. They can serve 240 people. They
will charge $6 for adult tickets and $2 for children's tickets. How many adult and children tickets should
they sell to make $1,200?
A) 160 adult tickets and 80 student tickets
B) 60 adult tickets and 180 student tickets
C) 180 adult tickets and 60 student tickets
D) 200 adult tickets and 40 student tickets
[tex]\huge{ \mathfrak{ \underline{ Answer} \: \: ✓ }}[/tex]
let the number of
adults be x children be yTotal number of people : adults + children
x + y = 240x = 240 - y - [1]Total money earned from adults :
6 × x = 6xTotal money earned from children :
2 × y = 2yTherefore, total money = money earned from each Adult and children.
6x + 2y = 1200 -[2]Now, let's plug the value of x from equation [1] into equation [2]
6 (240 - y) + 2y = 12001440 - 6y + 2y = 1200-4y = 1200 - 1440-4y = - 240y = 60let's plug the value of y in equation [1]
x = 240 - yx = 240 - 60x = 180Hence, we get :
total adults = x = 180total children = y = 60Correct option is C
_____________________________
[tex]\mathrm{ ☠ \: TeeNForeveR \: ☠}[/tex]
Solve all of them i will give brainless
Yes I want Brainless (lol)
A.) 53 (just add every point in the data like 50+50+51+52...etc)
B.) UQ:30 LQ:26 Me:29 Max:32 (Mi:25)
C.) D.
D.) C. (3 3 3 3 4 5 6 6 7 7 7 7 7 8 8 10 11 11 14 14)
E.) B. (https://byjus.com/multiplying-3-fractions-calculator/)
match each trig function to a ratio. tan(A)=
Answer:
[tex]\frac{y}{x}[/tex], the fourth option.
Step-by-step explanation:
Tan means [tex]\frac{opposite}{adjacent}[/tex] or opposite side divided by adjacent side.
Tan A equals the opposite side of the angle A divided by its adjacent side.
The side opposite of A is y and side adjacent to it is x.
So, Tan A equals [tex]\frac{y}{x}[/tex]!
Chris's car was rear-ended by another driver and Chris decided to file a claim for the body damage. Which deductible would he have to pay before he receives a payment from the insurance company?
A) Premium
B) Comprehensive
C) Collision
D) He would not have to pay any deductible because he was not at fault.
[A P E X Per sonal Fin ance Sem 2]
Answer:
D
Step-by-step explanation:
Does the following statement refer to a growth or fixed mindset? "Science will always be impossible to me, no matter how hard I try."
Answer:
fixed
Step-by-step explanation:
ANSWER PLEASE...
The table shows the heights of the 5 tallest mountains in the world. Find the mean, median, and range
of the heights.
Answer: The median is 28208 the mean is 28234.6
Step-by-step explanation:
The mode is the number that is repeated the most there can be more than one mode.
Answer:
All in ft
Mean: 28,235
Median: 28,208
Range: 1,245
Step-by-step explanation:
Mean is the sum of the elements divided by the number of elements.
(29035+28250+28208+27890+27790)/5 = 28235
Median is the element in the exact middle of the set (if there is an even number of elements, take the average of the two elements in the middle).
After rearranging the numbers, we can see 28208 is in the exact middle.
27790 27890 28208 28250 29035
Range is the difference between the smallest and largest number in the set.
29035-27790=1245
Which correctly describes the effects on the graph of the parent function f(x) = 2x2 - 6 when g(x) = f(x + 5)?
A The graph of g(x) represents a translation of the parent function 5 units to the right.
В.
The graph of g(x) represents a translation of the parent function 5 units to the left.
C. The graph of g(x) represents a translation of the parent function 5 units up.
D. The graph of g(x) represents a translation of the parent function 5 units down.
Answer:B
Step-by-step explanation:
El padre de Noe compró 90 bultos de cemento, cada bulto pesa 50 kg ¿Cuál es el peso total del cemento en toneladas?
Answer:
El peso total del cemento es 4.5 toneladas.
Step-by-step explanation:
El padre de Noe compró 90 bultos de cemento. Cada bulto pesa 50 kg.
Para obtener el peso total de cemento comprado por el padre de Noe se calcula mediante la multiplicación entre la cantidad de bultos de cemento y el peso de cada bulto:
90 bultos* 50 kg= 4500 kg
La tonelada hace referencia a una medida de masa en el Sistema Internacional de Unidades y en el sistema métrico decimal, que equivale a un peso de 1000 kilogramos (kg). Entonces podes aplicar la siguiente regla de tres: si 1000 kg equivalen a 1 tonelada, 4500 kg equivalen a cuántas toneladas?
[tex]peso=\frac{4500 kg* 1 tonelada}{1000 kg}[/tex]
peso= 4.5 toneladas
El peso total del cemento es 4.5 toneladas.
1.On field day, the P.E. coach divides the students into two groups, Positives and Negatives. He wants to have the same amount of students of each group on each side of a rope, to play Tug-of-War.
He uses the following expression to figure out how many students of a certain group he still needs to create an even match.
–5 + 20
Evaluate the expression and write the answer below. Write only a number, either positive or negative. No letters
Answer:
-15
Step-by-step explanation:
because -5 + 20 = -15.
The coach needs 15 negative players to join the negative team in order to get 20 players (which would make the teams even)
If f(x)= 3x+ 10, what is f(−7)?
Step-by-step explanation:
f(x)= 2x² + 5x – 3, then what is f(–2)?. Possible Answers:. – 137.
Round to the nearest foot
22.65140101
Answer:
23 Ft
Step-by-step explanation:
What is the mode of the data set below? 32, 13 14, 45, 56, 14
Answer:
14
Step-by-step explanation:
Find the mode by simply seeing which value appears the most. 14 appears twice whereas all the other numbers appear once.
I need
21 over
50
of fuel in %
Answer
42%
Step-by-step explanation:
Answer:
42%
Step-by-step explanation:
[tex]\frac{21}{50}[/tex] as a percent
[tex]\frac{21}{50}=\frac{y}{100}[/tex]
50 · y = 21 · 100
50y = 2100
50y ÷ 50 = 2100 ÷ 50
y = 42
Jermaine draws a triangle with the following dimensions:
• Height: 15 centimeters
• Base: 16 centimeters
What is the area of the triangle?
? cm2
which is greater ? 5/13 , 45%
Answer:
45% is greater than 5/13
Step-by-step explanation:
i hope this helps :)
Answer:
45% is greater.
Step-by-step explanation:
45% is greater because 5/13 as a percentage is roughly 38 percent which is smaller than 45%.
i do not pay attention in school.
Answer:
i believe its the pounds lol
#2
Step-by-step explanation:
HELP PLEASE I HAVE 2 MINUTES LEFT 7TH GRADE MATH
Answer:
i would say B
Step-by-step explanation:
i need help really badly
Answer:
Answer A
Step-by-step explanation:
If you use the Medium, Mean, And Range that's what it would be,
That's what I'm assuming this assignment is.
Mr.Jones rents an office in a building for $600 a month. His office has an area of 1,250 square feet. At the same rate, how much will it cost to rent an office with an area of 3,000 square feet?
Answer:
$1440
Step-by-step explanation:
From the above question:
We know that the rate is
1250 ft² = $600
3000 ft² = x
Cross Multiply
1250ft² × x = 3000ft² × $600
x = 3000ft² × $600/1250ft²
x = $1440
Therefore, at the same rate, the cost of an office with an area of 3000 square feet is $1440
1/2(x + 2) + 3y < 8
please help :)
Answer:
Multiply to remove the fraction, then set equal to
0
and solve.
x
<
−
6
y
+
14
Step-by-step explanation:
Help me with this please
Answer:
J=4
Step-by-step explanation:
cos60=1/2
cos=Adjacent/hypotenuse
Cos60=2/j
j=2/cos60
j=2/1/2
J=4
1) Solve for Side A
2) Solve for Angle B
Answer:
1) 42.51
2) 39.76
Answer:
solution given;
let
AB=a
AC=b=30ft
AB=c=20ft
<A=115°
By using Cosine rule.
a²=b²+c²-2bc cos angle
a²=30²+20²-2*30*20 Cos 115°
a²=1807.1419
a=√[1807.1419]
a=42.51
Side A is 42.51ft.
Again
Cos B=[tex] \frac{a²+c²-b²}{2ac} [/tex]
Cos B=[tex] \frac{42.51²+20²-30²}{2*42.51*20} [/tex]
Cos B=0.7687
<B=Cos -¹(0.7687)
<B=39.46°
Angle B is 39.46