Let the number of water pumps be n and the time taken to fill the pool is t.
Now, we can see that higher the number of water pumps, lesser the time to fill the pool.
It means quantities vary indirectly.
Thus,
Now, we have been given that It takes four identical water pumps 6 hours to fill a pool.
Thus, we have
Hence, constant of variation is 24.
Now, we have to find the time that three pumps will take to fill the same pool.
Hence, it will take 8 hours to fill the pool by three identical pumps.
The correct statement comparing the theoretical and experimental probabilities is given as follows:
.
A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.
The theoretical probability is taken before any experiment. Since the four sections are equal, the theoretical probability is:
T(H) = 1/4.
The experimental probability is taken considering previous experiments. Out of 100 tosses, 28 landed on H, hence:
E(H) = 28/100 = 7/25.
Hence the correct statement is:
.
More can be learned about probabilities at brainly.com/question/14398287
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