Answer:
C. The samples are independent because there is not a natural pairing between the two samples.
Step-by-step explanation:
Independent samples are stand-alone samples. Their values do not give information about other values in another samples. They cannot be altered. Examples: To test the effectiveness of a particular drug in managing diabetes, a group of people is placed on the active drug. Another group is placed on a placebo. The two samples are independent because their values are taken from two different set of groups or people.
But a dependent sample is usually taken from the same group to test for the effectiveness of a drug before and after treatment.
Answer:
#5: Equivalent
#6: Not Equivalent
1. 3x+6
2. 4y-4
3. x²+6x
4. xy+4x
5. 3x²+3xy-3x
Step-by-step explanation:
for #6 the equivalent: 2x(x+3)= 2x²+6x
X^2 + 4x -21
= (x +7)(x - 3)
hope that helps
Divide the number of cars by the number of hours:
288 / 9 = 32 cars per hour.
Answer:
n = -20
Step-by-step explanation:
Subtract 34 on both sides of the equation:
n = 14 - 34
n = -20
Hope this helps!
