2019jbash
12.10.2020 •
Mathematics
A box of LED light bulbs was tested to see how long the light bulbs last. The standard deviation of the light bulb lifetime data was five years. Which of the following is the best interpretation of this value?
Fifty percent of the light bulb lifetime data is below five years.
The difference between the longest and shortest light bulb lifetime was five years.
The lifetime of the light bulbs typically varies by about five years from the mean.
The middle half of the light bulb lifetime data has a range that is five years wide.
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Ответ:
C. The lifetime of the light bulbs typically varies by about five years from the mean.
Step-by-step explanation:
took test on edge
Ответ:
4 categories are shown in rows.
2 categories are shown in columns.
12 14 year olds.
82 people were polled.