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Question: 1. How many different sets of initials can be formed if every person has one surname and
(a) exactly two given names,
(b) at most two given names,
(c) at most three given names?
2. Letters in the Morse code are formed by a succession of dashes and dots with repetitions permitted. How many letters is it possible to form with ten symbols or less?
identify two important operating standards that are routinely measured in your organization. these measures must be
a engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots weighing between 120
A local politician wants an estimate of the proportion of the population who support her fiscal policies. She wants the estimate to be within .06 of the true proportion. Assume a 95 percent level of confidence.
At a local supermarket the monthly customer expenditure follows a normal distribution with a mean of $495 and a standard deviation of $121.
(a) Find the mean, variance, and range for these data and interpret. (b) Find lower and upper quartiles, median and interquartile range. Check for any outliers and interpret. (c) Construct a box plot and interpret.
Problem: Screening for infectious diseases in a blood-bank setting is a major part of ensuring blood safely. At a local clinic, subject's blood donations are tested for infection. Suppose that 5 percent of all blood donations are infected n some w..
15% were contaminated with salmonella, and 13% were contaminated with both of these bacteria. What is the probability that a tested chicken chosen at random is: contaminated with salmonella and not campylobacter.
Suppose you hear an "old-timer" say, "Why, in my day, kids were much more respectful and didn't cause as much trouble as they do nowadays!" Formulate a hypothesis related to this statement that you could test. How would you test it
A shipment of 250 netbooks contains 3 defective units. Determine how many ways a vending maching company can buy three of these units and receive a) no defective units b) all defective units c) at least one good unit.
according to chemical engineering progress nov. 1990 approximately 30 of all pipework failures in chemical plants are
A scientist examined the effect of temperature and catalyst on the yield of a reaction. He ran the experiment at both 150° and 200°C with two types of catalyst.
Why were the pattern of settlement in the Chesapeake and New England so different? What forces and ideas shaped the spatial organization of each region.
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