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A bank manager wants to estimate the population variance of the daily deposits into the savings account at the bank. A random sample of 14 deposits had a mean of $350 and a standard deviation of $64. What is the point estimate for the population variance?
A box has square ends and a rectangular base but no top, the volume is 288 cubic cm. What is the minimum total area of the sides and base, and what are the corresponding dimensions?
The expected future of Achworth, which presently has 2000 residents, can be approximated by the formula y=2000(e).02t , where t is the number of years in the future.
Calculate the simple linear regression equation
Let X be a continuous random variable with the PDF f and the CDF F. Assume that f(x) > 0 for all real numbers x. Define the random variable Y = F (X ). Show that Y is uniform in the interval [0, 1].
A student has computed that it takes an average (mean) of 17 minutes with a standard deviation of 3 minutes to drive from home, park the car, and walk to an early morning class. One day it took the student 21 minutes to get to class. How many stan..
A new fashion in clothes is introduced. It spreads slowly through the population at first but then speeds up as more people become aware of it.
Could you explain to me the difference between functions and linear equations? I need to know if all linear equations are functions and if there are any instances in which a linear equation is not a function.
63 percent of men consider themselves basketball fans. You randomly select 10 men and ask each if he considers himself a basketball fan. Find the probability that the number who consider themselves basketball fans is (a) exactly eight, (b) at leas..
Elena's daughter sold 78 boxes of Girl Scout cookies. She was told that this amount represented 20% of the troops sale. How many boxes did the troop sell?
The perimeter of a square garden is 248 metres. What is the length of each side?
Factor the polynomial and state the multiplicity of each zero and zeroes of a real polynomial
Find the expected value E(X), the varianceVar(X) and the standard deviation σ ( X ) for each of the density functions.
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