Question

A production manager tests 10 lightbulbs and finds that their mean lifetime is 442 hours. She then designs a sales package for this type of bulb. It states that consumers can expect the bulb to last approximately 450 hours. This is an example of what phase of inferential statistics?
A. Probability-based inference
B. Data organization
C. Data gathering
D. data analysis

Answer 1

A

Answer 2

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