A manufacturer of pacemakers wants the standard deviation of the lifetimes of the batteries to be less than 1.8 months. A sample

Question

2 years ago

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A manufacturer of pacemakers wants the standard deviation of the lifetimes of the batteries to be less than 1.8 months. A sample

of 20 batteries had a standard deviation of 1.6 months. Assume the variable is normally distributed. Find the 95% confidence interval of the standard deviation of the batteries. Based on this answer, do you feel that 1.8 months is a reasonable estimate?

Mathematics

1 answer:

kodGreya [7K] · Answer 1 · 2023-09-21T10:09:34+03:00

kodGreya [7K]2 years ago

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Answer:

Look down my answer↓:

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