Answer:
18 inches
Step-by-step explanation:
9*=36
36/2=18
Answer:
Step-by-step explanation:
14 -3x < -1, subtract 14 from both sides
-3x < -1 -14, combine like terms
-3x < -15, <u>divide both sides by -3 </u>
x > 5
! when solving inequalities if we <u>multiply or divide by a negative number</u> the sense of inequality changes.
Answer:
So on this case the only option that satisfy the calculated statistic is:
z=-0.42
Step-by-step explanation:
Assuming this complete problem: "In a 2-sample z-test for two proportions, you find the following:
^P1 = 0.32, (n,1)=50
^P,2= 0.36, (n,2)=50
Find the test statistic you will use while executing this test:
z=-0.67
, z=±1.64
, z=-1.96
, z=0.34
, z=-0.42"
Solution to the problem
Data given and notation
sample 1 selected
sample 2 selected
represent the sample proportion for 1
represent the sample proportion for 2
z would represent the statistic (variable of interest)
represent the value for the test (variable of interest)
We need to apply a z test to compare proportions, and the statistic is given by:
(1)
Or equivalently:
(1)
Where
Calculate the statistic
Replacing in formula (1) the values obtained we got this:
So on this case the only option that satisfy the calculated statistic is:
z=-0.42
The answer would be 3x^2 I think.