Statistics Solutions

[Solved] A paint manufacturing company claims that the mean drying time for its paints is not more than 45 minutes. A random sample of 25 gallons of paints

Question: A paint manufacturing company claims that the mean drying time for its paints is not more than 45 minutes. A random

sample of 25 gallons of paints selected from the production line of this company showed that the mean drying time for this sample is

50.0 minutes with a standard deviation of l 1.2 minutes.

  1. Test at the alpha level of 0.05 significance if the mean drying time for this company’s paints is more than 45 minutes. Assume that the drying times for these paints have a normal distribution.
  2. How large a sample would need to be taken it‘ we wished to predict the mean drying time to within two minutes with 95 % accuracy?

Price: $2.99
Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document


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