Sample standard deviation
A normally distributed process has specifications of LSL = 50 and USL = 60 on the output. A random sample of 25 parts indicates that sample mean = 56 and sample standard deviation = 2. Obtain the estimate of Cpm
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A 1543-kg submarine rises straight up toward the surface. Seawater exerts both an upward buoyant force of 14,687 N on the submarine and a downward resistive force of 1007 N. What is the submarine's acceleration?
The number of phone calls passing through a switchboard has a Poisson distrubution with a mean equal to 3t, where t is the time in minutes. Find the probability of the following:
Calculate the power and mix time for a pitch blade turbine agitator with diameter DA=0.33 m running at N=16 rpm in a tank system without baffles but otherwise conforming to the standard tank configuration.
Assume that on the average 1 person out of 25 whold make plane reservations fails to show. An airline takes 100 independent reservations and has 96 seats. What is the probability that every passenger will have a seat?
Graphical displays are used to provide the viewer information that illustrates qualitative or quantitative information about the data set under review.
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Determine the reading on the pressure gage in psig when all the liquid has just turned to vapor (all saturated vapor). Show this process on a sketch of a T-v diagram.
Find the mean and varience of X. Use the general formulas for mean and variance and check results using the formulas u = np and o2 = npq.
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