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QUESTION
A company's management thinks that monthly sells have increased, and now average over 50 per month. The distribution is known to be normal. We assume...
A company's management thinks that monthly sells have increased, and now average over £50 per month.
- The distribution is known to be normal.
- We assume sigma
- σ = 10 is known.
- N = 49
- sample mean = 53.1
Test the claim at the 10% significance (alpha = .10)
(α=.10).
