The temperature at noon was -4° C. By midnight, the temperature dropped 8°C Which expressions represent the temperature at midnight?
Select all that apply
А
-4 + 8
B.
- 8
C 1 - 4 - 8
D
-4 + (-8)
E
-4-(-8)
F
1-4-(-8)

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )

|z| > (1/2) {-1/2, 1/2} {z|(-1/2) < z < (1/2)} {z|z < (-1/2) ∪ z > (1/2)}