Answer:
Reject the null hypothesis.
Step-by-step explanation:
n1 = 16
n2 = 21
S.V1 = 5.8
S.V2 = 2.4
= 0.05
= Population Variance 1 ≤ Population Variance 2
= Population Variance 1 > Population Variance 2
Test statistic value = 5.8 / 2.4 = 2.417
Degrees of freedom is n - 1
15 and 20
Critical value is
= 2.2
2.417 > 2.2
we reject the null hypothesis as the critical value is greater than the test statistic.
For this case we have the following equation:

By completing squares we have:
Step 1:
Add
on both sides:

Step 2:
We rewrite the equation:

Step 3:
We solve the equation:

Solutions:

Answer:
the next line would be:

Answer:
4k(k-3)(2k-1)
Step-by-step explanation: