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Suppose that a process is in control with μ = 14 and σ = 2. An X control chart based on subgroups of size 5 is employed. If a shift in the mean of 2.2 units occurs, what is the probability that the next subgroup average will fall outside the control limits? On average, how many subgroups will have to be looked at in order to detect this shift?
Construct the ANOVA table (i.e. compute the between and within SS) and test if there appears to be any differences in means (use α = 0.05)
commercial fishermen in alaska go into the bering sea to catch all they can of a particular species salmon herring etc.
Suppose that, from a population of 75 bank accounts, we want to take a random sample of six accounts in order to learn about the population. How many different random samples of six accounts are possible?
Determine whether the evidence is enough to reject the salesperson's claim. Establish the Null and alternative hypothesis, and choose the right test statistics.
Last week Sarah had exams in Math and in Spanish. On the Math exam, the mean was u, = 30 with a = 5, and Sarah had a score of X - 45. On the Spanish exam, the mean was u, = 60 with 0 = 6 and Sarah had a score of X = 65. For which class must Sarah ..
If the mailing list can be considered a random sample of the population, what is the chance that at least 1245 Macintosh users will receive the flyer?
Write the balanced chemical equation for the reaction between Na2SO4(aq) and CaCl2(aq). Explain the use of a solution of Ba(NO3)2(aq) to test the filtrate.
a) Test whether there is a difference between attitudes in the 2 cities. Use a 95% alpha. b) What does your result say about attitude consistency across cities?
overproduction of uric acid in the body can be an indication of cell breakdown. this may be an advance indication of
to monitor uniformity of thickness what type of control chart do you
in quality-control projects engineers use charts where item values are plotted and compared with 3 standard-deviation
a slot machine has three slots each will show a cherry a lemon a star or a bar when spun. the player wins if all three
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