The average number of articles produced by 2 machines per day are 200 and 250 with standard deviation 20 and 25 respectively on the basis of records of 25 day of protection. Can you regard both machines equally efficient at 1% level of significance.
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Step-by-step explanation:
Light or visible light is electromagnetic radiation within the portion of the electromagnetic spectrum that can be perceived by the human eye. Visible light is usually defined as having wavelengths in the range of 400–700 nm, or 4.00 × 10⁻⁷ to 7.00 × 10⁻⁷ m, between the infrared and the ultraviolet.
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Answer:
20
Step-by-step explanation:
your mutliply n this problem
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