Number of defectives
A random sample of n items is to be chosen from a large lot, and the number of defectives Y is to be observed. What value of n guarantees that Y/n will be within .1 of true fraction of defectives, with probability .95?
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A random sample of 20 people from the given population had cholesterol values?: 5.13, 4.79, 4.70, 4.63, 4.71, 5.72, 5.09, 6.98, 4.44, 5.94, 5.31, 4.22, 5.19, 3.55, 5.21, 5.91, 5.36, 3.02, 6.02, 7.42 For such data, the average: 5.167 as well as emp
Sally drives a car of 1000 kg wishing to raise her speed from 20 m/s to 30 m/s in 5 s. Find out the horsepower needed to achieve this augment. Avoid friction.
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A block of ice of 8.00 kg begins at rest and slides down a 1.50 m long frictionless ramp angled at 35° from the horizontal. i) Determine the acceleration of the block down the ramp?
A machine shop which manufactures toggle levers has both a day and the night shift. A toggle lever is defective if a standard nut cannot be screwed onto the threads. Let p1 and p2 be the proportion of defective levers among those manufactured thro
A glider of 0.150 kg is moving to the right (+x) on a frictionless, horizontal air track having a speed of 0.80m/s. It consists of an elastic collision having a 0.300 kg glider moving to the left (-x) with the speed of 2.20m/s. i) Determine the in
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Let Y be the breaking strength of the steel bar. If the steel bar is manufactured by procedure I, then Y is normally distributed with the mean µ = 50 and variance s2=36. It is hoped that if procedure II is used, Y will be usually distributed
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