Answer:
0
Step-by-step explanation:
I couldn’t really see the picture but I tried :)
Answer:
in point from: (-4,0) in equation from: x=-4,y=0
Step-by-step explanation:
1. a (n) = -0.6(n) + 14.6
2. a (12) =7.4 sec
3. 6th race
Would you like an explanation?
Answer:

Step-by-step explanation:
The confidence interval for the population mean x can be calculated as:

Where x' is the sample mean, s is the population standard deviation, n is the sample size and
is the z-score that let a proportion of
on the right tail.
is calculated as: 100%-99%=1%
So, 
Finally, replacing the values of x' by 308, s by 17, n by 15 and
by 2.576, we get that the confidence interval is:
