What material is the crown made of
When a crown of mass 14.7 kg is submerged in water, an accurate scale reads only 13.4 kg. What material is the crown made of?
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A certain 12:00 noon pollution level was found to be normally distributed and to have a mean of 7.7 and a standard deviation of 1.5. What is the probability of having a level between 3.4 and 7.5 at noon on a random day?
Find the probability that a random sample of size 7 sections will have a sample mean between 1.011 and 1 inches. Present the probability as a percent with two decimal place precision and no % sign.
The maximum gauge pressure in a hydraulic lift is 17.0 atm. What is the largest size vehicle (kg) it can lift if the diameter of the output line is 24.5 cm?
A short mild steel column with fixed ends has a cross section of 100mm by 50mm. Assuming a safety factor of 6 calculate the load that it can safetly support.
The power of this test(as a percent with two decimal place precision) for H1: mu=3.25 is Blank 2 What minimum sample size (as an integer) would be required to reject the null hypothesis if H1: mu=3.25? Blank 3
What gauge pressure is required in the city water mains for a stream from a fire hose connected to the mains to reach a vertical height of 17.0 m ? (Assume that the mains have a much larger diameter than that of the fire hose.)
Pipe is manufactured with a mean diameter of 1.01 inches and a standard deviation of 0.003 inches. Find the probability that a random sample of size 9 sections will have a sample mean between 1.012 and 1.009 inches. Present the probability as a pe
Air in an elastic balloon of initial diameter .2 m and internal pressure of 400 kPa expands to twice its initial diameter. How much work is done by air in the process?
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