Necessary in order to ensure a standard error
A random sample of size n is to be drawn from a population with mean = 700 and standard deviation = 300. What size sample would be necessary in order to ensure a standard error of 10?
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A Statistics professor has observed that for several years, about 13% of the students who initially enroll in his introductory Statistics course withdraw before the end of the semester.
The angle between 2 electrons is 65 degrees. If two electrons are each (2.10×10^-10) m from a proton, find the magnitude and of the net electrical force they will exert on the proton.
Find the probability that a randomly selected college student will take between 2.0 and 4.5 minutes to find a parking spot in the library?
An "ice calorimeter" can be used to determine the specific heat ofa metal. A piece of hot metal is dropped into a weighed quantity ofice. The quantity of heat transferred from the metal to the ice canbe determined from the amount of ice melted.
Jupiter has about 300 times the mass of Earth and about ten times Earth radius. Estimate the size of g on the surface of Jupiter.
The freezing point of a solution containing 4.12 g of unknown solute in 100 g of camphor is 166.2 C. Camphor has Kf = 37.7 C/m.Tf = 178.4.
Calculate the moid constant B. then compute the solidification time of a 0.5inch by 8inch by 8inch casting poured under the same condition?
Although crime rates in the U.S. are generally falling, in the past much has been written about the relative effectiveness of raising the probability of arrest and increasing the average sentence length.
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