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Find the indicated probabilities using the geometric distribution or Poisson distribution. Then determine if the events are unusual. If convenient, use a Poisson probability table tor technology to find the probabilities. A major hurricane is a hurricane with wind speeds of 111 miles per hour or greater. During the last century, the mean number of major hurricanes to strike a certain country's mainland per year was about 0.57.Find the probability that in a given year:
(a) exactly one major hurricane will strike the mainland,
(b) at most one major hurricane will strike the mainland, and
(c) more than one major hurricane will strike the mainland.
Combining all of the games played, what proportion did the Yankees win? Compute the z statistic and its P-value. What conclusion do you draw?
The distribution of test scores is mui=35 and a standard deviation of 15. Do students taking the supplement have significantly better memory scores? Use a one-tailed t-test with an alpha=0.05.
Identifying H0and Hr in ex 5-12 , examine the given statement , then express the null hypothesis H0 and alternative hypothesis H1 in symbolic form.
a bank with branches in a large metropolitan area is considering opening its offices on saturday but it is uncertain
the public library has a board of directors consisting of 6 women and 4 men. a 3-member committee from the board is to
More than 5 percentage points in either direction from what would have been got by interviewing all voters in United States." Determine sample size suggested by this statement.
in a certain very large city the department of transportation d.o.t. has organized a complex system of bus
Fewer than 30 individuals watched a movie at home this week ? b) More than 42 individuals watched a movie at home this week ?
Calculate the margin of error that would be used to determine a 95% confidence interval for the mean pulse rate of all women.
Find the 95% confidence interval of the mean score for all golfers if this is a sample of 110 golfers instead of a sample of 93.
q1. in a study of the effects of stress on illness a researcher tallied the number of colds people contracted during a
A school administrator randomly selects 12 classes from your school and then selects all of the students of those classes to study a school library issue. Which type of sampling design is being used.
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