Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
The life spans of car batteries are normally distributed, with a mean of 44 months and a standard diviation of 5 months. A) a car battery is selected at random. Find the probability that the life sp
What effect does the sample size have upon the maximum error of measurement?
What would the answer be if the device were attached to an aluminum heat sink ( c= 903 J/(kgK), %u03C1= 2700 Kg/m3) having a mass of 200 gm and an exposed surface of 50 cm2?
The temprature of the inflow to the pump is approximately the same as the temperature of the outflow. Determine the pressure difference between the entrance and the exit of the pump.
Consider the following. (a) The empirical rule indicates that we can expect to find approximately what percentage of the sample included between x ? s and x + s? %
Test results on a type of circuit board indicate that 20% of failures are caused by assembly defects, 70% are due to electrical components, and 10% are due to mechanical defects. Suppose 5 boards ha
Determine the viscous force exerted by the pipe on the fluid and the average shear stress on the inside surface of the pipe. Assume that uniform flow exists in the pipe.
Construct a discrete probabilty distribution for the random variable X (hint: probability equals frequency divided by total observations) and compute the mean and standard deviation of X. (rond to 2
The length of the diffuser is 6 ft and the weight of the diffuser is 120 lb. Determine the components of the force required to hold the diffuser in place.
The Population mean is 75. A random sample of 48 items is selected from the population. What is the probability that the mean of the sample is less than 64? (assume standard deviation of 9)
Weights of Pacific Yellowfin tuna follow a normal distribution with mean weight 68 lb and standard deviation 12 lb. A) Find the weight that corresponds to z = -1.35? B) What weight represents 95th p
the Yield Strength Sy = 40,000 psi, The Lenght l = 60 in and compressive load P = 30,000. Determine the safety factor N for the following boundary conditions Pinned - Pinned.
The manufacturer wants to check that the mean length of their bolts is 160 mm, and so takes a sample of 50 bolts and uses a one tail test with ? = .01 (i.e. H0: µ ? 160). What is the probabili
A manufacturer of strapping tape claims that the tape has a mean breaking strength of 500 psi. Experience has shown that breaking strengths are approximately normally distributed, with a standard d
A spring deflected by its rest position by 3 inches. If the modulus of the spring is 150 lbm/in, what is the work done in stretching the spring?
Describe the circumstances under which the shape of the sampling distribution of p-hat is approx.
Find the diamter of a pipe where (p1-p2) is 55 psi and the height rise along the pipe is 60 ft or (h2-h1) = 60 ft (the exit is higher than the entrance ).
Data analysis. It should include all the tables, charts, and detailed analysis. Please note that for each of the datasets that you present, you should also clearly analyze the pattern of the data an
A piston cylinder compressor is available for evaluation. How much mass is compressed during each compression stroke for these devices.
If the steam is to leave the condenser as saturated liquid at 20 kPa, determine the mass flow rate of the cooling water required in kg/min.
A turbine blade 6.3 cm long with cross sectional area 4.6x10-4m^2 and perimeter 0.12 m is made of stainless steel. Determine the temperature of the blade tip using analytical solution. Tip could be as
The device is now cooled until the temperature reaches 0degree C. Determine the change of volume of the device during cooling.
How much mass is compressed during each compression stroke for these devices. Find the final Temperature and volume of air before discharge.