The table shows a meteorologist's predicted temperatures for an April day in Washington D. C. Use quadratic regression to find a quadratic model for this data. (Use the 24-hour clock to represent times after noon.)
Time
8 AM
10 AM
12 PM
2 PM
4 PM
6 PM
Predicted Temperature (°F)
44.97
55.06
61.09
63.07
61
54.87
O a. -0.507x2 - 14.172x + 35.962
O b.-0.507x² + 14.172x - 35.962
OC.-1.0077? + 13.172x - 31.962
O d.-0.0077° +15.172x - 39.962

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

20

step-by-step explanation:

7 is the median   7.875 is the mean

step-by-step explanation:

3,4,5,6,8,11,13,13

150

step-by-step explanation:

(sorry i'm not typing it again just read the other two explanation sections i just typed it'll be the same.)