D)$40 because you divide 2 and 48 then multiply 10 then you do 20 x 10 then subtract the two answers
Answer:
Step-by-step explanation:
Hello!
You have two random samples obtained from two different normal populations.
Sample 1
n₁= 15
X[bar]₁= 350
S₁= 12
Sample 2
n₂= 17
X[bar]₂= 342
S₂= 15
At α: 0.05 you need to obtain the p-value for testing variances for a one tailed test.
If the statistic hypotheses are:
H₀: σ₁² ≥ σ₂²
H₁: σ₁² < σ₂²
The statistic to test the variances ratio is the Stenecor's-F test. 
~
The p-value is:
P(
≤0.64)= 0.02
I hope it helps!
Answer:
It will take 12 weeks to pay for the DVD players.
Step-by-step explanation:
Given in the question that,
total cost of DVD bought by Adela = $210
Step 1
Adela makes a down payment of $30
$210 - $30 = $180
Remaining cost = $180
Step 2
Adela pays $15 each week
$15 = 1 week
$180 = ?
$1 = 1 week/15
$180 = 180/15 week
= 12 weeks
Length=2x
width=x
Perimeter of a rectangle=2(lenght)+2(width)
The first is to find out the measures of this rectangle, that is to say, you have to find the length and width of these rectangle.
We can suggest this equation:
24=2(2x)+2(x)
4x+2x=24
6x=24
x=24/6
x=4
2x=2(4)=8
The lenght will be 8 in, and the length will be 4 in.
The second; you have to calculate the area of this rectangle.
area of a rectangle= lenght x width
area=(8 in)(4 in)=32 in²
answer: the area of Marshall´s rectangular poster would be 32 in²
Answer:
0.69 miles per hour
Step-by-step explanation:
speed =distance/time
speed= 506/723
506/723=0.69
