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(i) A batch of 15 integrated-circuit chips contains 4 of an "irregular" type. If from this batch 2 chips are selected at random, and without replacement, ?nd the probability that: (a) both are "irregular"; (b) none is "irregular"; (c) only one of the two is "irregular."
(ii) If the random variable in problem (i) above was mistakenly taken to be a bi- nomial random variable (which it is not), recalculate the three probabilities and compare the corresponding results.
Results sufficient to conclude that the self-hypnosis has a significant effect? Assume that increasing and decreasing allergic reactions are equally likely if the training has no effect. Use a = .05.
What characterizes a regular definition (dictionary) and an operational definition? What is the purpose of sampling?
a tool-crib with one attendant serves a group of 10 mechanics. mechanics work for an exponentially distributed amount
prestressed wire wrapping concrete pipe is manufactured in large rolls. a quality-control inspection requires 5
Draw a scatter diagram of the following bivariate data.
What is the shape of the distribution daily sales revenue from telemarketing operations and what is an estimate of the expected daily sales revenue from telemarketing operations?
how does the horsepower and weight affect the mileage of family sedan ? data from a sample of 20 2010 family sedans
a researcher examined rates of posttraumatic stress disorder ptsd in mothers and fathers. parents were interviewed 5
Dr Johnson wants to know if there is sufficient evidence to conclude that the grade distribution of his class is different than the historical grade distribution.
11% of all books sold are romance genre. If the bookstore sells 316 books on a given day, what is the probability that fewer than 40 are romances, at least 25 are romances, between 25 and 40 are romances?
A recent study by a large retailer designed to determine whether there was a relationship between the importance a store manager placed on advertising and the size of the store revealed the following sample information:
assume the 67 of the cars on a particular freeway are traveling faster than 70 miles per hour. a random sample of 15
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