Start with the boys. When the line leader is chosen, there are 10 choices. Then out of the remaining 9, one is chosen to be the caboose. For the girls, the numbers would be 12 and 11. Multiply these numbers to get 1180 possibilities.
Answer:
x=-35
Step-by-step explanation:
136+12x=-4(1-2x)
136+12x=-4+8x
+4 +4
140+12x-12x=8x-12x
140/-4=-4x/-4
x= -35
Answer:
(0.215,0.33)
Step-by-step explanation:
The 99% confidence interval can be calculated as
Where p is the estimated sample proportion that can be calculated as
p=x/n
where x=109 and n=400
p=109/400=0.2725
q=1-p=1-0.273=0.7275
The 99% confidence interval is
0.2725-2.5758(0.022262 )< P < 0.2725+2.5758(0.022262)
02725-0.057343 < P < 0.2725+0.057343
0.215157 < P < 0.329843
Rounding the obtained answer to three decimal places
0.215 < P < 0.33
Thus, the 99% confidence interval for the proportion of fatal accidents that involved the use of a cell phone is (0.215,0.33).
We are 99% confident that population the proportion of fatal accidents that involved the use of a cell phone will lie in this interval (0.215,0.33).
They are equal if u already have one answer
Answer: 2
Step-by-step explanation:
So, you need to put (4,7) (2,3) into m=y2-y1/x2-x1 form.
4= x1 7=y1 2=x2 3=y2
3-7= -4
2-4= -2
-4/-2=2