Mean and standard deviation of sampling distribution
A population has a mean of 81 and standard deviation of 25. Find the mean and standard deviation of sampling distribution of a sample means with sample size 262.
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A body weighs 6 grams when placed on one pan and 24 grams when placed on the other pan of a defective beam balance according to the reading shown on the instrument. If the beam is horizontal when both pans are empty, what is the true weight of the
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A car is traveling on a straight road. The maximum velocity that can be attained by the car is 24 m/s. The maximum acceleration and decceleration it can attain is 1 m/s^2 and 4 m/s^2 respectively. Find the minimum time taken by the car to start fr
Again, consider the trials involved with flipping a fair coin. It is reasonable to assume that coin flips are "independent." What is the probability of observing two "heads" outcomes in two consecutive flips of a fair coin?
In a preliminary design for a mail-sorting machine, parcels moving at 2 ft/s slide down a smooth inclined ramp and a horizontal surface with kinetic coefficient of friction μk with the parcel.
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Air enters an ideal diffuser operating at steady state at 1 bar, -3°C and 260 m/s and exits at with a velocity of 130 m/s. Determine : the exit temperature and pressure for the air.
Find the area under the standard normal curve which lies between z = 0.72 and z = 1.59
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