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Ivahew [28]
3 years ago
8

Math , pleaaaase

Mathematics
1 answer:
Whitepunk [10]3 years ago
4 0

Answer:

The standard deviation is above 6 mm, which means that this batch does not pass the technical control.

Step-by-step explanation:

Mean of the batch:

The mean of the batch is the sum of all values divided by the number of items. So

M = \frac{31+32+38+34+45+41+24}{7} = 35

Mean in the desired interval.

Standard deviation:

Square root of the sum of the difference squared between each term and the mean, divided by the number of itens. So

S = \sqrt{\frac{(31-35)^2+(32-35)^2+(38-35)^2+(34-35)^2+(45-35)^2+(41-35)^2+(24-35)^2}{7}} = 6.46

The standard deviation is above 6 mm, which means that this batch does not pass the technical control.

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