Given:
8.90ft³ for 30 balloons
Let h be the volume of helium and b be the number of balloons.
Using proportion;
b/h = 30 /8.90
Multiply both-side by h


Hence, the answer to blank 1 is the above.
when b=50, substitute for b in the above and solve for the volume (h).
That is;

Multiply both-side by 8.90/30


Hence, the answer to blank 2 is 14.83ft³.
Answer:
Independent-samples t-test.
Step-by-step explanation:
We are looking for the appropriate design for testing the significance of the difference between the means.
Now, there is a parametric test known as the Independent Samples t Test and what this test does is that it compares the mean of two independent groups in order to find out whether there is statistical evidence that the related population mean is significantly different.
Thus, the test to be used here is Independent-samples t-test.
Answer:
Wait what wdym I still see my tutors option
1 trillion is 10^9.
Thus, 21 1/2 trillion is 21 1/2 times 10^9, or 2.15 times 10^10
Hope this helps. If not, ask for clarification.