Standard deviation of customers book purchase
Suppose the probability of a customer purchasing 0, 1, 0r 2 books at a bookstore are 0.3, 0.2, and 0.5 respectively. What is the standard deviation of this customers book purchase?
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Test the claim that the samples come from population with the same mean. A consumer magazine wants to compare the lifetimes ofballpoint pens of three different types. The magazine takes arandom sample of the pens of each type and records thefollow
Which of the following Pearson correlations shows the greatest strength or consistency of relationship?
Knowing that Es = 29 x 106 psi and Ec = 3.6 x 106 psi, determine the normal stresses in the steel and in the concrete when a 150 kip axial centric force P is applied to the post.
A 1.6 g sample fo Co(NO3)2*6H2O isused to prepare the complex,[Co(NH3)4CO3]NO3. Assuming that all "other" reactants used in the synthesis of the complex are in excess, calculate the theoretical yield of the complex.
The initial volume is 0.1 m^3, the final volume is 0.04 m^3, and the final pressure is 2 bar. Determine the initial pressure, in bar, and the work for the process, in kJ, if a) n=0, b) n=1, c) n=1.3.
Give the distance of the spot to the positive charge in meters (m). (Hint: The spot does not necessarily lie between the two charges.) (b) What would be the force on a charge of +14 X 10^-6 C placed at this spot?
What would the scatter plot show for data that produce a Pearson correlation of r = +0.88
The turpentine and the aluminum cylinder are then slowly warmed together to 85.0°C. (The average linear expansion coefficient for aluminum is 2.4 x10^-6°C, and the average volume expansion coefficient for turpentine is 9.0 10^-4°C.)
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