An experiment is planned that will measure the effect of applying various amounts of a chemical which will partially close the stomata on plant leaves on the transpiration rate. As the research engineer responsible for the pilot plant producing this new material. you are working closely with the plant scientist, who is running the field tests of your materials. The usual transpiration rate for sorghum is 5 g/dm2 h for the wind velocity, degree of cloudiness. relative humidity, and dry-bulb temperature on the South Plains of Texas. This rate may fluctuate by 0.5 g/dm2 h under normal daytime conditions. How many replicates will be required to detect 9 times out of I 0, a difference of 1.5 g/dm2 h in transpiration rate? The significance level you and the plant physiologist have agreed to use is 5%.
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