James had a peach that was 98mm in diameter. One day he watered it with a magical solution, and it grew to 188,869 mm in diamete
1 answer:
We know that 98mm is the 100% of the diameter of the plant before James watered with the magical solution; after he watered, the diameter of the plant grew to 188.869mm. Let 
be the grew in the percentage of the diameter.
Now we can establish a ratio and solve for:
%
Now that we know the diameter of the plant grew 192.7%, we just need to divide that quantity by 100% to find how many times the diameter grew:
We can conclude that the diameter of the peach <span>become approximately 1.9 times larger after James watered it.</span>
Now we can establish a ratio and solve for
Now that we know the diameter of the plant grew 192.7%, we just need to divide that quantity by 100% to find how many times the diameter grew:
We can conclude that the diameter of the peach <span>become approximately 1.9 times larger after James watered it.</span>
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Answer:
represent the mean and,
represent the deviation
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X a random variable distributed normally. For this case we just need to conditions in order to satisfy a standard normal distribution
represent the mean and,
represent the deviation
On this case we say that is a normal standard distribution.