What is the probability that the sample mean
Heights of trees in a forest are normally distributed with mean 50 feet and standard deviation 12 feet. In a random sample of 36 trees what is the probability that the sample mean:
a. Exceeds 55ft
b. Between and 47.5 and 53.1 feet.
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The working fluid at 23C rejects 100 kJ/min as heat transfer from the engine. Determine the temperature of the fluid during heat addition, in degrees Celcius.
Calculate the x-component of the force on a 1.0-cm long piece of the lower right-hand wire, due to the other three wires.
A random sample of size 64 is drawn from a population with mean 80 and standard deviation 20. Describe the sampling distribution of the sample mean.
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