Probability that the mean of the sample is less
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)
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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 probability of a type II error if the actual mean length i
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.
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 percentile? C) What weight represents the third qu
An aluminum wire carrying a current of 4.0A has a cross-sectional area of9.010-6m2. Find the drift speed of the electrons in the wire. The density of aluminum is 2.7 g/cm3.
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.
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 decimal places)
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.
The Seattle Corporation has been presented with an investment opportunity which will yield end-of-year cash flows of $30,000 per year in Years 1 through 4, $35,000 per year in Years 5 through 9, and $40,000 in Year 10.
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How do you usually help parents shift their perspective when they expect more academic style activities at this age?
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