Mean and standard deviation of the random variable
Find out the mean and standard deviation of the random variable for which the probability mass function is defined as follows:
p(X=x)=(x-2)/30 if x=3,12,21
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Sam Ying, a career counselor, claims the average number of years of schooling for an engineer is 15.8 years. A sample of 16 engineers had a mean of 15 years and a standard deviation of 1.5 years. The test value would be -2.68. True or False? And w
Calculate the molecular mass of a gas that diffuses through a porous membrane which is having 1.859 times faster than the Xe? What might the gas be?
Assume c is directly proportional to square of d. If c=45 when d=3, determine constant of proportionality and write formula to determine c when d=5.
CH3OH is used as an alternate fuel. It is burned with the 200 percent of theoretical air. Discuss how much water is condensed per kilogram per fuel when the products of combustion are cooled to 100 kPa and 30oC.
C2, B2(diatomic boron) and, N2 the energies are 289, 962, 619 Kilojoules/mol (not in any order) the lengths are 109,158,130 pm( picometers ) Determine the bond length and bond order and the bond energy for each diatomic atoms.
Find a 99% prediction interval for y when x = 14 for this data set:
A sample which is having 44.0 g of an unknown metal at 99.0 Celsius was placed in a constant pressure calorimeter having the 80.0 gram of water at 24.0 Celsius. The final temperature of the system was found to be 28.4celsius. Determine the
A sample which is having 34,44g of a metal is heated to 98.6 C? In a hot water bath until thermal equilibrium is reached. At 22.2 C the metal sample is quickly transferred to 50.00 mL of water?
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