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olga55 [171]
3 years ago
10

The life in hours of a 75-watt light bulb is known to be normally distributed with σ = 25 hours. Suppose that you wanted the tot

al width of the two-sided confidence interval on the mean life to be six hours at 95% confidence. What sample size should be used?
Mathematics
1 answer:
Temka [501]3 years ago
4 0

Answer:

Step-by-step explanation:

Download docx
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