Answer:
The correct answer is option 'D': Standard error of the mean.
Step-by-step explanation:
If we carry out observations that are random in nature the mean of the data is the average value which gives us an idea about the value about which the data is spread about.
The standard deviation gives us the distribution of the data around the mean thus data with a low standard deviation means that the data point's are closer to mean. A larger value of standard deviation means that the data is highly discrete or we can say that the variations in the data points is large.
the concept of standard deviation is highly useful while carrying out results of measured observations as it gives us a estimate of the standard error of the mean.
If 14 of the 50 fish were trout, we can write this as a fraction; 14/50.
To get this into an easier-to-understand form, we can multiply both sides by 2, giving us a fraction of 28/100. This means that 28 out of 100, or 28% of fish, will be trouts, at least for a rough expectation.
From there, we can multiply 28%, the percentage of trout, by 7,500, the total amount of fish in the lake.
7,500 x 28% = 2,100
Therefore, we can roughly expect about 2,100 of the fish in the lake to be trout.
Hope this helps! :)
Answer:
Re= 5*10^5
Step-by-step explanation:
The numbers are not totally clear as they repeat each other. Under this consideration I will assume the closest values according to the advertised.
r=0.5m
V=1m/s (or) V=11m/s
We know that Reynolds number is given by,
Or for the another velocity
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