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Over [174]
3 years ago
10

A 90% confidence interval is found to be (72,78) what is the margin of error

Mathematics
1 answer:
andrew-mc [135]3 years ago
5 0

Answer:

3

Step-by-step explanation:

i just took the quiz on a p e x!

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Solve for W <br><br> T= sqrt(5/(wc)
Gnoma [55]
T= sqrt(5/wc) remove ( ) T= 5sqrt/wc multiply by wc Twc=5sqrt divide by Tc W= 5sqrt/cT hope this helps
5 0
3 years ago
Read 2 more answers
If x = 8 and n = 3, Evaluate the following expression: 3x - 3n + 2
Firlakuza [10]

Answer:

7

Step-by-step explanation:

3x8-3x3+2

24-3x3+2

24-9+2

15+2

=17

5 0
3 years ago
Set A={1,2,3,4,5,6} two numbers from set A are selected at random without replacement and their sum recorded how many different
wolverine [178]
The minimum sum is 3 and the maximum is 11. So there are 9 different possible sums.
There are 30 ways to get these 9 different sums.
The table below shows all outcomes.

1 2 3 4 5 6
———————————-
1 | X 3 4 5 6 7
2 | 3 X 5 6 7 8
3 | 4 5 X 7 8 9
4 | 5 6 7 X 9 10
5 | 6 7 8 9 X 11
6 | 7 8 9 10 11 X
6 0
3 years ago
Math help please <br> Knock knock
mart [117]
3/9
24/54
35/5
35/7

Explanation:
express 1/2 with denominator 10

All you have to do is divide the 10 by two and multiply your result by the numerator.

Therefore: 10/2=5
5x1=5

numerator= 5
denominator=10
7 0
3 years ago
The sum of three numbers is 50. One number is five more than a second number. It is also twice the third. Find the numbers.
Blababa [14]
Let
One Number = x
Second Number =x-10
Third Number=x/2

Sum of three numbers is 50
x+x-10+x/2=50
2x-10+x/2=50
Multiply by 2 both sides
2*(2x-10+x/2)=50*2

4x-20+x=100
5x=100+20
5x=120
x=120/5
x=24

One number = x=24
Second number =x-10=24-10=14
Third number= x/2=24/2= 12
8 0
3 years ago
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