Answer:tbh
Step-by-step explanation:
and\
A researcher surveyed 220 residents of a city about the number of hours they
spend watching news on television each day. The mean of the sample was
1.8 with a standard deviation of 0.35.
The researcher can be 95% confident that the mean number of hours all the
residents of the city are watching news on television is 1.8 with what margin
of error?
Margin of error is 4.645% with 95% confidence that the mean number of hours all the residents of the city are watching news on television is 1.8 .
Data given :
A researcher surveyed 220 residents of a city about the number of hours they spend watching news on television each day. The mean of the sample was 1.8 with a standard deviation of 0.35 .
The researcher can be 95% confident that the mean number of hours all the residents of the city are watching news on television is 1.8 with what margin of error,
By formula of margin of error = [tex]M = 1.96 \times S / \sqrt{N} ,[/tex]
[tex]Margin \ of \ error, \ M = z \times \frac{s}{\sqrt{N}}[/tex]
z - represents the z-value for the required confidence level .
s - represents the standard deviation of the sample .
N - represents the sample size .
Now, using the above information, compute the margin of error as -
[tex]\therefore \ Margin \ of \ error, \ M = z \times \frac{s}{\sqrt{N}} \\= 1.96 \times \frac{0.35}{\sqrt{220}}[/tex]
[tex]=0.04625 (rounded \ to \ 5\ decimal\ places) \\\\ =4.625\%[/tex]
Thus, the margin of error, M, is approximately 4.625% .
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Which angles are adjacent to DFE?
Select all that apply.
9514 1404 393
Answer:
(c) ∠BFD
Step-by-step explanation:
Angle DFE is created from rays FD and FE. An adjacent angle will have one of those rays as one of its sides. Of the offered choices, only ∠BFD includes one of those two rays as one of its sides.
Can someone help me find the answer to this riddle please?
Answer: Riddle
Step-by-step explanation: The letters that aren't in the second word, but are in the first make riddle. Like I got the r because it wasn't in bead but it was in bread, etc
Answer:
The answer is "Riddle"
Step-by-step explanation:
First letter: R
Second letter: I
Third letter: D
Fourth Letter: D
Fifth Letter: L
Sixth Letter: E
Which of the following is equivalent to ^5sqrt13^3
Answer:
The last one 13^3/5
Step-by-step explanation:
13^3/5
The probability of winning a game is 20% how many times should you expect to win if you play 36 times
What is the range of y = -3sin(x)?
THE ANSWER
B) -3 (less than or equal to) y (less than or equal to) 3
Answer:
its b
Step-by-step explanation:
the man said so
Answer:
b
Step-by-step explanation:
Evaluate the expression for b = 7
6b + 8 – 5b
Answer:
For b = 7, the expression equals 15.
Step-by-step explanation:
6b + 8 - 5b
Substitute the variable b = 7.
6(7) + 8 - 5(7)
Multiply.
42 + 8 - 35
Add.
50 - 35
Subtract.
15.
Answer:
15
Step-by-step explanation:
6 × 7 = 42
5 × 7 = 35
42 + 8 - 35 = 15
Which of the following is the correct point-slope equation for the line that passes through the point (2, -5) and is parallel to the line given by y = -4x + 25?
Answer:
(-4 - (-2))/(2 - (-2)) = -2/4 = -1/2
Step-by-step explanation:
Pick either point.
y - (-4) = (-1/2)(x - 2)
y + 4 = (-1/2)x + 1
y = (-1/2)x - 3
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1. True or false:
The ordered pair (3, 4) is a solution for the equation:
5x + 2y = 23
2. True or false:
The ordered pair (0, 4) is a solution for the equation:
5x + 2y = 23
1) true
2)false
Step-by-step explanation:
1) 5(3)+2(4) = 23
= 15+8=23
23=23
thus, (3,4) is solution for 5x + 2y = 23
2) 5(0)+2(4) =23
= 0+8 is not 23
thus, (0,4) is not solution for 5x + 2y = 23
For what values of m does the graph of y = mx2 – 5x – 2 have no x-intercepts?
Answer:
If the 'm' u r trying to say is slope of line on the graph then it will be parallel to x axis
3) If the chocolate inside the package is 335954.96 mm, how much empty volume/space is inside the
container? Show all work and give answers to 2 decimal places
Answer:
A
Step-by-step explanation:
I need help ss is below
Answer:
9± √3
Step-by-step explanation:
Answer:
Step-by-step explanation:
Hope this helps u!!
Give me an example of an event that has a 2/5 chance of occuring.
Answer:
You have 2 red marbles and 3 green marbles in a bag. What is the probability that a red marble is pulled out of the bag?
Ronald runs 6,000 meters in 2 hours. He is thinking of running an 18 kilometers race. How much time will he take in the race if he maintains the same speed?
Answer:
6 hours
Step-by-step explanation:
speed = distance/ time
6000meters to km = 6000/1000= 6km
speed for the first race = 6/2
speed = 3km/hr
for the second race
speed = distance/time
3 = 18/time
cross multiply
3* t = 18
divide both sides by 3
t = 18/3
t = 6 hours
Answer:
Ronald will take 6 hours to complete the 18 km race if he maintains this speed.
Step-by-step explanation:
6000m in 2h = 6km in 2h
multiply by 3:
18km in 6h
Have a nice day!
which shapes have 2 obtuse angles? choose
Answer:
a trapizoid has 2 obtuse angles
Step-by-step explanation:
Lyndy conducted a survey of the 300 students in her school. She found that 60 students own dogs, while only 30 students own cats. What percent of the students own cats?
give me direct answer
Answer:
390
Step-by-step explanation:
u add all together
What is the median of the following data values?
108, 102, 43, 100, 22
O A. 80
O B. 95
O C. 100
O D. 75
Answer:
100
Step-by-step explanation:
You're correct :) good job
right triangle with x, 29, and 18 degrees
Answer:
we can't answer this bc u dont show which side is whicj
Step-by-step explanation:
but u need to use sin, cos, or tan
54 people in 1 bus, how many buses for 213 people are needed?
Answer:
4 buses
Step-by-step explanation:
213/54 = 3.9 but you have to round up to 4 since you can't have 9 tenths of a bus
The product of two whole numbers is 360 an their sum is less than 100 what are the possible for the two numbers
Answer: 36 and 10
Step-by-step explanation:
36 * 10 = 360, 36 + 10 = 46
Solving steps for 2x + 14 = 34 ? I know the answer but it's asking me to label the steps
Answer:
2x+14=34
Step-by-step explanation:
Subtract 14 from both sides
2x=20
Divide by 2 on both sides
Hope this helps :)
Rhombus CDEF is shown below. If the slope
of FC is 5/2, what must be the slope of CD in order for CDEF to be a square?
Answer:
15
Step-by-step explanation:
trust
The slope of side CD in rhombus CDEF is -2/5. Therefore, option B is the correct answer.
What is a rhombus?A rhombus can be defined as a special parallelogram as it fulfills the requirements of a parallelogram, i.e. a quadrilateral with two pairs of parallel sides. In addition to this, a rhombus has all four sides equal just like a square. That is why it is also known as a tilted square.
Given that, the rhombus is CDEF and the slope of FC is 5/2.
Here, sides FC and CD are perpendicular.
The slope of a line perpendicular to given line is m₁=-1/m₂
Slope of CD is -2/5.
Therefore, option B is the correct answer.
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Susan has 3 pairs of shorts, 5 shirts, and 2 pairs of shoes to take to camp. If she wears a pair of shorts, a shirt and pair of shoes each day, how many different outfit combinations does Susan have to choose from?
Answer:
30
Step-by-step explanation:
What is the distance from -2 to 0?
O A. 2, because |-2| = 2
ОВ.
1
2
because 1-2) =
2
O c. 2, because 1-21 = -2
D. -2, because |-2| = -2
Answer:
A. 2, because -2=2 2+-2=0 if that makes sense
State whether f^-1 (x) is a function given the equation
Answer:
We have that [tex]f(a) = f(b)[/tex] if [tex]a = \pm b[/tex], which does not respect the condition for the existence of an inverse function, which means that [tex]f^{-1}(x)[/tex] does not exist for this function.
Step-by-step explanation:
Existence of an inverse function:
An inverse function will exist if: f(a) = f(b) only if a = b.
In this question:
[tex]f(a) = -\frac{1}{7}\sqrt{16 - a^2}[/tex]
[tex]f(b) = -\frac{1}{7}\sqrt{16 - b^2}[/tex]
[tex]-\frac{1}{7}\sqrt{16 - a^2} =-\frac{1}{7}\sqrt{16 - b^2}[/tex]
[tex]\sqrt{16 - a^2} = \sqrt{16 - b^2}[/tex]
[tex](\sqrt{16 - a^2})^2 = (\sqrt{16 - b^2})^2[/tex]
[tex]16 - a^2 = 16 - b^2[/tex]
[tex]a^2 = b^2[/tex]
[tex]a = \pm b[/tex]
We have that [tex]f(a) = f(b)[/tex] if [tex]a = \pm b[/tex], which does not respect the condition for the existence of an inverse function, which means that [tex]f^{-1}(x)[/tex] does not exist for this function.
PLEASE HELP I DONT GET THIS AT ALL I BEG U! helppp!! pleaseeee!!
I have a mixing bowl that holds 4 liters of liquid. It's not quite big enough for all my cooking needs, so I find the exact same mixing bowl on Amazon that is just twice the size of the bowl I have. How many liters of liquid can the bigger mixing bowl hold?
Answer:
8 liters
4x2=8
Step-by-step explanation:
(3x^2+2y^2+3xy)-(x^2+y^2+2xy)
Answer:
6x+4y+3xy-2x+2y+2xy
4x+2y+xy
this is the answer
Step-by-step explanation:
4x+2y+xy answer
hope this will help you
What number is rational, less than 0, greater than -4 but is not an integer?
Ten students each attempted 10 free throws. The list shows how many free throws each student made. What is the mean of free throws made? *
Answer:
why isn't anybody answering. I guess ill have too.
Step-by-step explanation:
Ok.