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Almost every year, there is some incidence of volcanic activity on the island of Japan. In 2005 there were 5 volcanic episodes, defined as either eruptions or sizable seismic activity. Suppose the mean number of episodes is 2.4 per year. Let X be the number of episodes in the 2-year period 2008 2009.
a) What model might you use to model X?
b) What is the mean number of episodes in this period?
c) What is the probability that there will be no episodes in this period?
d) What is the probability that there are more than three episodes in this period?
a recent survey asked adults about their beliefs about premarital sex and whether they thought birth control should be
Employ a four period moving average and determine the forecasted demand for August. Put your answer in the form xx.x with no additional numbers or symbols.
question the appliance centre sells a variety of electronic equipment and home appliances. for the last four years
Assume that the hourly cost to operate a commercial airplane follows the normal distribution with a mean of $3,985 per hour and a standard deviation of $440.
On average, the size of the difference between the sample mean and the population mean is predicted by:
question wageweb.com exhibits salary data obtained from surveys. it provides compensation information on over 170
Find the best point estimate of the mean salary of all NCAA football coaches.
There are 30 customers on a given day. What is the salesperson’s expected gross pay and the standard deviation of the salesperson’s gross pay for that day?
find the z-scores that separate the middle 71 of the distribution from the area in the tails of the standard normal
A radio station must broadcast at exactly 103.1 MHz. In a random sample of 25 days they average 103.8 MHz. The SD at radio stations with similar equipment is .1 MHz. At level of significance a = .05, are they meeting FCC specifications? Do ..
Males had a mean cholesterol level of 195 and a standard deviation of 10. If the campus was equally divided between males and females, how many males on this campus would be at increased risk?
The owner of a car dealership wants to determine whether there is a relation between the income level and the type of vehicle purchased in their dealership.
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