Rounding up to the nearest whole number, you would need to survey approximately 753 randomly selected air passengers to be 90% confident that the sample percentage is within 3.5 percentage points of the true population percentage.
To determine the sample size needed for estimating a population percentage with a specified margin of error and confidence level, we can use the formula for sample size calculation for proportions. The formula is:
n = (Z^2 * p * (1-p)) / E^2
Where:
n is the required sample size,
Z is the Z-score corresponding to the desired confidence level (for a 90% confidence level, Z ≈ 1.645),
p is the estimated population proportion (since we don't have an estimate, we can use 0.5 for maximum sample size),
E is the desired margin of error (in decimal form).
In this case, the desired margin of error is 3.5 percentage points, which is 0.035 in decimal form.
Plugging in the values, we have:
n = (1.645^2 * 0.5 * (1-0.5)) / 0.035^2
Calculating this expression gives us:
n ≈ 752.93
Rounding up to the nearest whole number, you would need to survey approximately 753 randomly selected air passengers to be 90% confident that the sample percentage is within 3.5 percentage points of the true population percentage.
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Please Help i need this right now Thanks
What is the equation graph below?
Answer: y =7/4x
Step-by-step explanation:
The y-intercept is 0. To find the slope, do the change in y over the change in x. At the point on the graph, there is a slope of 14/8 = 7/4
what times 1,000 equals 4,320
Answer:
4.32
Step-by-step explanation:
Call the unknown number = x
We have: 1000x = 4320
=> x = [tex]\frac{4320}{1000}[/tex] = 4.32
=> The number we need to find is 4.32
Answer:
4.32
Step-by-step explanation:
What fraction do you multiply 3 by to get 1
determine if f (x) = - x^3 + 4x^2 +7x - 6
Solve the equation. 8w = 48
Answer:
8w=48
This answer can be simplified by dividing both sides which contain the variable, which in this case is 8. Dividing 48 by 8 gets 6. This means that w equals 6.
Answer:
w = 6
Step-by-step explanation:
Solve
8w = 48
8w/8 = 48/8
= w = 6
Perform the indicated operation.
f (x) = x2 − 4 g(x) = −3x Find f (g(x))
Answer:
-6x-4
Step-by-step explanation:
2(-3x)-4
-6x-4
r F(x) is your frame function since it is on the outside, when every you get to an x in the F function you plug in the G function then solve as normal.
SOMONE HELP PLEASE! I HAVE BEEN STRUGGLING ALL DAY!
Answer: 378 the second option
Step-by-step explanation:
Answer:
378
Step-by-step explanation:
Multiply 9 and 12 then divide by 2 to get the area of the triangle then multiple by 7 to get the volume
Please help I don't know how to do this
i not sure but i think its 183
Answer:
question 18 asking for a equation for each week 89÷4
question 19 would be 60 + 123 = 183 then 183 ÷ 4 = 45.75
Write the following inequality in slope-intercept form. –12x – 2y ≥ –42 y ≥ –6x – 21 y ≤ –6x – 21 y ≤ –6x + 21 y ≥ –6x + 21
Answer:
y ≤ –6x + 21
Step-by-step explanation:
Find the length of side a.
10
A
6
A. 4
B. 64
C. V 136
D. 8
PREVIOUS
Answer:
D .8
Step-by-step explanation:
hypotenuse (h) = 10
base (b) = 6
perpendicular (p) = a= ?
We know by using Pythagoras theorem we get
p = √ h² - b²
a = √ 10² - 6²
a = √ 64
a = 8
Hope it will help :)
(2x2)+(6x 109)
I don’t know how to do this
Answer:
658
Step-by-step explanation:
4+654=658.........
Answer:
658
Step-by-step explanation:
First solve 2x2, which is equal to 4.
Then solve 6 x 109 which is equal to 654.
Now add 4 to 654, and you'll get 658
pls help me solve surds , √75 ,√48, √12,√125,√28. pls help
9. An inequality is shown
2x - 5 < 33
Select all the values that are solutions to this inequality
a. 28
b. 26
C. 19
d. 18
e. 12
PLEASE HELPP!!
Help ASAP!!!! I’ll give you brainlest
Answer:
A I THINK IM SORRY IF IM WRONG
Step-by-step explanation:
Answer:
It is the second one
Step-by-step explanation:
The circumference of a circle is 5 feet. What is the area?
Give the exact answer in simplest form.
Answer:
We have the formula for the area of a circle: S = R² x [tex]\pi[/tex]
=> S = 5² x 3.14 = 78.5 f²
Step-by-step explanation:
John joined a gym for 6 months. He pays 20$ per month plus a membership fee. If his bill is 150$, what was the membership fee?
Answer:
Step-by-step explanation:
If he's been at the gym for 6 months, and he is charged $20 each month, then he has paid $120 dollars, not counting his membership fee. His total bill is $150.
150-120= $30
His membership fee was $30.
Hope this helps!
Mark Brainliest plz!
x is the number of months and y is the membership fee
[tex]cost = 20x + y[/tex]
[tex]150 = 20(6) + y[/tex]
[tex]150 = 120 + y[/tex]
[tex]150 - 120 = 120 - 120 + y[/tex]
[tex]30 = y[/tex]
The membership fee was $30.
Silas and Lilly attended a math conference. The total registration fee was $327.50. If each person paid the same amount, which equation
represents the amount each person paid?
A 2x = 327.50
B 1/2x = 327.50
C x + 2 = 327.50
D x - 2 = 327.50
Answer:I think the answer is letter B.
Step-by-step explanation:
help plsss how do you find the size of angle ABE
Answer:
∠b = 90°
Step-by-step explanation:
If you wrote it correctly then ∠d will = 90°, right?
We have AB ║(which is parallel to) D => ∠b = ∠d = 90°
P/S: I think that you took the wrong photo, the right question should be above. I'm very please if you can take it again and I will write the right solution down below in the comment section (if u don't mind)
What is -2 1/3 - (-5)?
Answer: =2 2/ 3
Step-by-step explanation:
i put the wrong screenshot lol this is the last one for 25
Answer:
The best way to measure an angle is to use a protractor. To do this, you'll start by lining up one ray along the 0-degree line on the protractor. Then, line up the vertex with the midpoint of the protractor. Follow the second ray to determine the angle's measurement to the nearest degree
Step-by-step explanation:
thankuuuu,☺Answer:
D or 8sqrt3
Step-by-step explanation:
the shortest side = the longest divided by 2
the shortest side = 16/2
the shortest side = 8
the longer side = the shortest times sqrt3
the longer side = 8 times sqrt3
the longer side = 8sqrt3
a coin is tossed several times and the ratio of the head to tails is 24:26. What Fraction of Tosses are heads?
Answer:
siiiiiiiiii
Step-by-step explanation:
Find the area of a triangle with:
b: 14 cm
h: 23 cm
ANSWERS
322 cm2
322 cm3
161 cm2
161 cm3
Answer:
161cm2
Step-by-step explanation:
Area: 1/2 x base x height
1/2 x 14 x 23=161
Area is measured in cm2
Hope this helps!
6/1000 as a common fraction
x is an even whole number less than 5.
Answer:
x can either be 2 or 4
Step-by-step explanation:
Whole numbers less than 5 are = 1, 2, 3, 4
Even whole numbers less than 5 are = 2 and 4
1 and 3 are odd numbers
Therefore, even whole number less than 5 are 2 and 4
x can either be 2 or 4
PLEASE HELP! WILL MARK BRAINLIEST IF U ANSWER CORRECTLY! IF WRONG U WONT GET IT
Answer: 120cm
Step-by-step explanation:
If the lines in a system of equations have different slopes and the same y-intercept, how many solutions does the system have?
Answer:
289819
Step-by-step explanation:
The length of a rectangle is 5cm and the width is 3cm. What is the length of a diagonal? Leave the answer in reduced exact form. Hint: Draw A PICTUR
Answer:
[tex]\sqrt{34} } =5.83[/tex]
Step-by-step explanation:
[tex]D=\sqrt{5^{2} +3^{2} } =\sqrt{34}[/tex]
por liquidación,toda la ropa de invierno está en oferta,te descuentan 50 pesos por cada 100 pesos que compres ¿cuanto se deberá pagar por una chamarra cuyo precio y otal es de 850 pesos?
Answer:
no comprendo
Step-by-step explanation:
Today, everything at the store is on sale. The store offers a 20% discount. The regular price of a T-shirt is $16. What is the discount price?
Answer:
12.8
Step-by-step explanation: