Compute the mean and variance of x
An urn contains originally 2 red chips and 3 white chips. A chip is drawn at random and replaced by chip of opposite color. Let X by the number of red chips after 4 draws. Find out the p.m.f. of X and compute the mean and variance of X.
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Calculate the function of the packing in a packed tubular distillation? Discuss is it possible to pack a column too tightly?
The chunk of burned wood is found in which percentage of Carbon 14 among all carbon of wood is 10% T years ago corresponding percentage was 30%. Determine T. Assume half life of Carbon 14 is 5,600 years.
From a population of size 8 (N=8), all possible samples of size 3 (n=3) that can be drawn are:
A partially vacated airtight container consists of a tight-fitting lid of surface area 77 cm2 and negligible mass. When the force needed to remove the lid is 484 N and the outside atmospheric pressure is 1.0 x 105 Pa, determine the air pressure in
They found that t years after study started population size,N(t), was increasing at the rate proportional to 1100-N(t). If population was 500 in year 2000, find size of elk population in year 2010?
Describe the property of a solution makes distillation possible? During a distillation why is it absolutely necessary to have the thermometer correctly placed?
At this point, the person doing the laundry opens the lid, and a safety switch turns off washer. The tub smoothly slows to rest in 12.0 s. During how many revolutions does the tub turn as it is in motion?
You flip a coin 8 times. Find out the exact probability in % of getting tails on precisely 2, 3, or 4 of flips.
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