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In the last quarter of the 2007, a group of 64 mutual funds had the mean return of 1.2% with a standard deviation of 6.5%. Suggest the Normal Model N (0.012, 0.065) for the returns of these mutual f
What is the probability that on a randomly selected day during this period a unit of currency B was worth less than 1.227 units of currency A? (in percentage)
A package of twelve Ping-Pong balls haves two defectives. An inspection procedure to check on the quality of the package is to select randomly two Ping-Pong balls for inspection and to reject the en
Determine the probability that on the randomly selected day throughout this period the unit of currency B was worth less than 1.253 units of currency A? (In percentage)
Determine the probability that on randomly selected day throughout this period, a unit of currency B was worth less than 1.266 units of currency A? (In percentage)
A certain discrete random variable has probability generating function
Explain two unique features or employs of the empirical formula, the box plot, and z-score (two for each). These techniques can be employed to find out the same information regarding a data set, bu
A batch of 20 employed automobile alternators haves 4 defectives. If 3 alternators are chosen at random, find out the probability of events (using the Rule of Combinations);
What differentiates a z test statistic for the population from the z statistic for the sampling of means? Why the difference? Suggest a normal population with? = 43 and? = 5.2. C
By measuring the amount of time it takes the component of product to move from one workstation to the next, an engineer has estimated that standard deviation is 4.17 seconds.
A 98% confidence interval measure for a population mean was calculated to be (33.7, 54.5). Estimate the mean of the sample, which was employed to estimate the interval estimate (show all work)
Why is "rounding-down" LP solution a suboptimal manner to solve Integer programming problems?
Due to printer failure, none of the observed values in following table were printed, but some of the marginal totals were. Is it probable to construct the corresponding table of expected values from
The thicknesses of the six pads designed for employ in aircraft engine mounts were measured. The results, in mm, were 40.93, 41.11, 41.47, 40.96, 40.80, and 41.32.
Let Y be the breaking strength of the steel bar. If the steel bar is manufactured by procedure I, then Y is normally distributed with the mean µ = 50 and variance s2=36. It is hoped that if pr
A machine shop which manufactures toggle levers has both a day and the night shift. A toggle lever is defective if a standard nut cannot be screwed onto the threads. Let p1 and p2 be the proportion
A random sample of n items is to be chosen from a large lot, and the number of defectives Y is to be observed. What value of n guarantees that Y/n will be within .1 of true fraction of defectives, w
After collecting data for six months, the mean value of fill volume of a 2 liter soda bottle is found to be 2010 ML with the standard deviation of 3.77 ML.
A random sample of 20 people from the given population had cholesterol values?: 5.13, 4.79, 4.70, 4.63, 4.71, 5.72, 5.09, 6.98, 4.44, 5.94, 5.31, 4.22, 5.19, 3.55, 5.21, 5.91, 5.36, 3.02, 6.02, 7.4
Is d in the span of a,b and c? Show that the four vectors are linearly dependent. Express one of the four vectors as the linear combination of the others.
Mention the sample points in the intersection of the events (O ∩ M)
A financial manager made two new investments-one in the oil industry as well as one in the municipal bonds. After a one-year period, each of the investments will be classified as either successful o
Let O = event that the oil industry investment is successful and M= the event that the municipal bond investment is successful. Mention the sample points in O and in M.
Let X be the random variable following the normal distribution with mean μ and variance σ. Calculate E(X^2) and E(X^3).