Sample size in each of two groups
What sample size in each of two groups is needed to detect a difference in the true means from each group of 10 with a two-tailed test at the 0.05 level, a power of 0.90, and standard deviation of 10? Assume outcomes are normally distributed.
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In an action movie, the hero grabs a rope attached to the rafters of a warehouse to swing across to the other side. If his arms are capable of exerting a force of 2000 N on the rope, what is the maximum speed he can tolerate at the lowest point of
The boiler kicks on raising the temperature of the water flowing to the pump to 200 F The pump begins to fail lowering the prressure. At what pressure in psia does cavitation occur.
A researcher measures eye color for a sample of n = 50 people. Which measure of central tendency would be appropriate to summarize the measurements? mean, median, mode or any 3?
Metallic copper is formed when aluminum reacts with copper(II) sulfate. How many grams of metallic copper can be obtained when 54.0 g of Al react with 319 g of CuSO4?
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