Number of gray balls drawn
A box has 5 yellow, 7 gray, and 6 black balls. Three balls are drawn at same time (i.e. without replacement) from box. Let X be the number of gray balls drawn. Find out the following. (Round your answers to three decimal places.)
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Employ the given information to find the minimum sample size required to estimate an unknown population mean µ. How many women should be randomly chosen to determine the mean weight of women in one age group.
It snows in Greenland average of once in 20 days, and when it does, glaciers have 15% chance of growing. When it doesn't snow in Greenland, glaciers have only a 5% chance of growing. Determine the probability that it is snowing in Greenland when g
The blood vessel of inner radius 1.35 mm carries blood at the average speed of 2.66 cm/s. Determine pressure drop along the 1.00 cm length of blood vessel.
Assume the pdf o the random variable x is f(x;?) = ? e-?x, x > 0, ? > 0, where ? is the parameter of the distribution. Employ the method of maximum likelihood to obtain an estimator of ?,
Assume that the certain instant volume is 375cm and pressure is 75 kPa and is reducing at the rate of 11 kPa/min. At what rate is volume increasing at the instant?
Consider 10 measurements of the diameter of a certain cell type. Suppose that these measurements are random samples drawn from an underlying Gaussian distribution with mean μX = 4.38 and standard deviation σX = 0.06.
How much ten degree Celsius water do you require to add to decrease coffee's temperature to the more bearable 49 degrees Celsius?
Area of garden mary's backyard vegetable garden estimates 20 ft by 30ft, so its area is 20*30=600ft2. She makes decision to make it longer, so area increase to A=20(30=x).
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