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Use the following information to answer the next five exercises:
Javier volunteers in community events each month. He does not do more than five events in a month. He attends exactly five events 35% of the time, four events 25% of the time, three events 20% of the time, two events 10% of the time, one event 5% of the time, and no events 5% of the time.
P(x < 3) = _______
Overall, the amount of work-hours involved in the festival preperation is normally distributed around 100 hours withn a standard deviation of 12 hours.
During normal business hours on the east coast, calls to the toll-free reservation number of the Nite Time Inn that the numb roy calls per minute can be described by the Poisson distribution.
a major chain of food stores wants to determine the proportion of customers who buy on impulse. the company decided to
Is it reasonable to conclude that this set of n = 16 people is not a representative random sample of registered voters?
What is the median number of CDs owned? What is the 40th percentile? What is the range of the number of CDs owned? What is the standard deviation of the number of CDs owned?
refer to the following frequency distribution for questions 1 2 3 and 4.the frequency distribution below shows the
Suppose a certain oil producing country exports (1 + X) million barrels of oil per day, where X is a random variable having a normal distribution with mean zero and variance 1/25.
An employee of a bank wants to test the null hypothesis that on the average the bank cashes 10 bad checks per day against the alternative that this figure is too small.
a study by hewitt associates showed that 79 of companies offer employees flexible scheduling. suppose a researcher
In a four page paper in apa format , describe the procedure one would use to estimate a relationship between two variables, using computer software.
Find a 90% confidence interval for the proportion of AA flights arriving on time.
The probability of a river flow exceeding 2,000 cubic meters per second is 15% and the coefficient of variation of these flows is 20%. Assuming a normal distribution calculate
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