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Assume the random variable x is normally distributed with mean u=87 and a standard deviation o=5. Find the indicated probability P(73< x < 82) round to four decimal places
let x denote the number of heads obtained when a fair coin is tossed 4 times.a what is ex and varx?b repeat 10 times
What is his expected cash balance at the end of the following May and what is the probability that his balance will be negative in one or more month?
Critically discuss some examples of descriptive statistics? Why are they used in research? What is a confidence interval?
1. a homeowner plants 6 bulbs selected at random from a box containing 5 tulip bulbs and 4 daffodil bulbs. what is the
at a recent concert the attendance was recorded to be 36327. a random sample of 2254 of those in attendance found that
suppose diameters of trees in a particular forest are normally distributed with a mean of 18.4 inches and a standard
Provide a description of one method for estimating the reliability and one method for substantiating the validity of a test.
Discuss the concept of 'extended family' with Asian and Latino ethnic minorities. Discuss the strengths and weaknesses regarding delivery of social and health services to these groups.
Develop upper and lower control limits (99.7%) for the proportion of students with complaints.
Calculate the expected value and standard deviation of the value.
Suppose the probability that a carton of eggs will contain at least one broken egg is 1/3. use a simulation of 20 trials to find the probability that the next three cartons will contain only unbroken eggs.
Washing machines leaving the factory that are defective. Obtain a sample size that will ensure a margin of error of at most 0.014 for a 97% confidence interval.
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