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Aliyah2020
03.04.2020 •
Mathematics
The lengths of a certain species of beetles are normally distributed with a mean of 1.9 centimeters and a standard deviation of 0.2 centimeters.
What is the z-score of a beetle of this species with a length of 2.38 centimeters?
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Ответ:
the z score is 2.4
Step-by-step explanation:
Since the lengths of the certain species of beetles are normally distributed, we would apply the formula for normal distribution which is expressed as
z = (x - µ)/σ
Where
x = length of the beetle species.
µ = mean length
σ = standard deviation
From the information given,
µ = 1.9 centimeters
σ = 0.2 centimeters
For a species with a length of 2.38 centimeters, the z score is
z = (2.38 - 1.9)/0.2
z = 0.48/0.2
z = 2.4
Ответ:
Step-by-step explanation:
Fractions are numbers and can be shown on a number line:
Fractions represent equal parts of a whole object or shape:
Whole numbers can be expressed as fractions: For example: 4 = 4⁄1 and 1 = 4⁄4