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The two-parameter gamma distribution can be generalized by introducing a third parameter g, called a threshold or location parameter: replace x in (4.8) by x - g and This amounts to shifting the density curves in Figure 4.27 so that they begin their ascent or descent at g rather than 0. The article "Bivariate Flood Frequency Analysis with Historical Information Based on Copulas" (J. of Hydrologic Engr., 2013: 1018-1030) employs this distribution to model X = 3-day flood volume (108 m3 ). Suppose that values of the (very close to estimates in the cited article based on past data).
a. What are the mean value and standard deviation of X?
b. What is the probability that flood volume is between 100 and 150?
c. What is the probability that flood volume exceeds its mean value by more than one standard deviation?
d. What is the 95th percentile of the flood volume distribution?
Consider a large population with a mean of 170 and standard deviation of 25. A random sample of size 36 is taken from the population. Calculate the standard error of the sampling distribution of this sample mean and round your answer to the hundre..
reasearchers for a manufacture of barometers reach each of 50 barameters at the same time each day. the mean of the
Assuming that the odds ratios for the two groups, those with zero or one partner and those with two or more partners, are equal (in other words, the number of partners is not an effect modifier), calculate the Mantel-Haenszel estimate of this comm..
a local business school claims that its graduating seniors get higher-paying jobs than the national average for
a bus passes by a certain street corner every morning around 900 a.m. let x be the difference in minutes between the
Test the hypothesis that the proportion of all student cell phone users in the United States who own a smartphone is 35%. Use the 5% level of significance and report your results.
Kurt's Adventures, Inc. stock is quite cyclical. In a boom economy, the stock is expected to return 30% in comparison to 12% in a normal economy and a negative 20% in a recessionary period.
schadek silkscreen printing inc. purchases plastic cups on which to print logos for sporting events proms birthdays
Construct an 80% confidence level using a t-distribution for the mean age. Round your answer to two decimal places.
The automotive center guarantees customers that the service will take no longer than 20 minutes. If it does take longer, the customer will receive the service for half-price. What percent of customer receive the service for half-price?
Bbutton to determine whether the design of the control panel was contributing to the high rate of accidents in the plant. The resulting scores were as follows:
What is the mean number of children per family? Round your answer to one decimal place as necessary. For example, 4.5 would be a legitimate entry.
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