Answer:

• subtract eqn(b) from eqn(a);

• find x :

Answer:
Since the null hypothesis is true, finding the significance is a type I error.
The probability of the year I error = level of significance = 0.05.
so, the number of tests that will be incorrectly found significant is computed as follow: 0.05 * 100 = 5
Therefore, 5 tests will be incorrectly found significant given that the null hypothesis is true.
Answer:
4
Step-by-step explanation:
The distance between the two points is (-1,-4) - (-5,-4)
Answer:
A
Step-by-step explanation:
30% of 4
4÷100=0.04
0.04×30=1.2
x^2-9x-6=0
Use the quadratic formula to get (9+sqrt(105))/2 or (9-sqrt(105))/2