Answer:
So the answer for this case would be n=870 rounded up to the nearest integer
Step-by-step explanation:
Information given
represent the deviation
ME = 7 represent the margin of error
Solution
The margin of error is given by this formula:
(a)
And on this case we have that ME =7 and we are interested in order to find the value of n, if we solve n from equation (a) we got:
(b)
The critical value for 99% of confidence interval now can be founded using the normal distribution. The significance level would be 
and 
. The critical value would be 
, replacing into formula (b) we got:
So the answer for this case would be n=870 rounded up to the nearest integer
Answer:
80 yards
Step-by-step explanation:
Using the area formula, A = lw, set up an equation where w represents the width.
The length can be represented by 3w because it is 3 times the width:
A = lw
300 = (3w)(w)
300 = 3w²
Solve for w:
300 = 3w²
100 = w²
10 = w
So, the width is 10 yards.
The length will be 30 yards since the length is 3 times the width.
Then, add the lengths and widths together to find the perimeter:
10 + 10 + 30 + 30
= 80
So, the perimeter is 80 yards
Answer:
3. Option D
5. Option B
13. Option D
17. Option B
Step-by-step explanation:
<u>Question 3</u>
4C means that, multiply 4 with all the terms in the matrix A . We get option D.
<u>Question 5</u>
Matrix A + matrix B means that add corresponding terms of each matrix.
We get option B.
<u>Question 13</u>
Here we have to find a₁,₂ (the term in which first row second column)
a₁,₂ = 2
We get option D.
<u>Question 17</u>
B - CF - First multiply matrix C with matrix F and subtract it from Matrix B.
We get option B
Answer:
250
Step-by-step explanation:
1000 divide by 4 is 250
1 times
250=250
Answer:
21+4=25
Step-by-step explanation:
