Normal random variable with a mean
Let X be a normal random variable with a mean of 210 and a standard deviation of 36. What value of X is less than 71% of the values? a. 180.8 b. 190.2 c. 202.4 d. 229.8
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It enters the nozzle at 100 psi, 200 F with a velocity of 100 ft/s and exits at a pressure of 25 psi at a low velocity. No work is exchanged between the nozzle and its surroundings. Calculate the exit temperature.
An automobile dealer sells used cars with an average value of $12400. The prices are normally distributed with a standard deviation of $3280. What percentage of the cars will sell for $15000 or more?
The tanker truck is capable of delivering 1200 gal each trip (there are 7.48 gallons in one cubic foot and 3.2808 feet in a meter) How many deliveries should be arranged?
A process is to be monitored with standard values m (mu) = 10 and s = 2.5. The sample size is n = 2. Find the center line and control limits for the X-bar chart.
Neglecting the water resistance to the horizontal motion of the platform, determine the speed of the platform after a and be jump at the same time.
Let X and Y be independent random variables with means u1=1 and u2=2, standard deviations equal to 2 and 1. Find the distributions of the variables
A job shop consists of three machines and two repairmen. The amount of time a machine works before breaking down is exponentially distributed with mean 10. If the amount of time it takes a single repairman to fix a machine is exponentially distrib
A nitrogen line, 540 R, 75 lbf/in2. is connected toa turbine that exhausts to a closed, initially empty tank of 2000ft3. Calculate the work of the turbine assuming constant specific heat
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