Answer:
0.72 or 0.72866953788 0.7 0.72866953788
Answer:
A matched-pairs hypothesis test for μD
Step-by-step explanation:
The trainer wants to compare each athlete's time before the program to the time after the program. Since we're comparing times for the same athlete, the data is paired, so we should use a matched-pairs test.
Answer:
Option C
+ or - 3
Step-by-step explanation:
A quadratic equation will have equal roots if its Discriminant is equal to zero.
the discriminant in this case is 
considering the equation,

a = 9, b= 8k, c=8
Replacing the variables in the original equation with their respective values, we will have:

Note: The values of k are meant to be + or -2.12 as seen from the workings
However, these are not in the options given. the closest choice to it
is + or - 3
<span>In this problem, we will use the combination
since the order does not matter but the flower can only be selected once. From the
given, we have a total of 11 flower and 9 flowerpots, to get the number of
possible combinations, we can write is at 11C9 or 11! / {9! (11-9)!}. The total
number of possible combinations is 55</span>