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A university schedules its final examinations in 18 examination group" so that courses held at different times are in different examination groups. The examination times are spread over 6 days, with 3 examinations each day. Suppose all students take 4 examinations. About what proportion of students will have their 4 examinations on different days? [You need to make some assumptions-state what the assumptions are]
The matching problem. There are n letters addressed to n people at n different addresses. The n addresses are typed on n envelopes. A disgruntled secretary shuffles the letters and puts them in the envelopes in random order, one letter per envelope.
a) Find the probability that at least one letter is put in a correctly addressed envelope. [Hint: use the inclusion-exclusion formula of Exercise 1.3.1.2]
b) What is this probability approximately, for large n?
A researcher wishes to forcast the proportion of fish in a perticular lake which is inedible due to pollution of the lake.
Four balls are selected at random without replacement from an urn containing 10 white balls and 8 red balls.
question to study the effect of temperature on yield in a chemical process four batches were produced at each of
A study is set up to determine the proportion of cities with private refuse collection. It is desired that the estimate is within 2% of the population
The number of 911 calls in Butte, Montana has a Poisson distribution with a mean of 12.555 calls a day. The probability of seven 911 calls in a day is ____________
The standard deviation of Caucasian adult male heights is about 7 cm. The average Greek 18-year-old in Athens is 167.8 cm tall. How easily could the average Dutch man hide in Athens?
A standard deviation of 4.8. If the 36 people are randomly selected, How do I find the probability that their blood pressure will be less than 118?
Provide an example and state the Null and the Alternative hypothesis for the examples in symbolic form.
More rain for California? The changing climate will probably bring more rain to California, but we don't know whether the additional rain will come.
Imagine a researcher is interested in examining the relationship of self-esteem (ScoreOne) and productivity (ProdOne). The researcher is also interested in the ability to predict the productivity of teachers using years of teaching (Experience) as..
Find a 95% confidence interval for the true proportion of au pairs in Canada that come from North America.- Is there any evidence to suggest that the two true proportions are different? Justify your answer.
1. for a population containing n902 individuals what code number would you assign fora. first person in the list.b.
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