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Question: Gas prices. Here are boxplots of weekly gas prices at a service station in the Midwestern United States (prices in $ per gallon):
a) Compare the distribution of prices over the three years.
b) In which year were the prices least stable? Explain.
in 2009 the number of feral quaker parrots living in austin was 250. in 1992 there were only 15 feral quaker parrots.
questionnew horizons airlines wants to forecast the mean number of unoccupied seats per flight to germany next
In the Distance problems, the kids are given a Rate (speed) that a vehicle is going, as well as a Time that the vehicle travels, and asked to calculate the Distance travelled. In the Rate problems they are asked to compute Rate from the other two ..
suppose the lifetime of a particular appliance follows an exponential distribution with a mean of 10 years. what is the
The topic for discussion in the Forum of Unit 6 are mathematical models and how good they should fit reality. In this Forum we would like to return to the same.
discuss the basic differences and similarities between the binomial distribution and the poisson distribution. use
The profit from selling food at an outdoor cafe depends on the number of hours of sunshine through the formula, Profit = 1000(1-(e -x /10)). Find the expected level of profit.
2800 people were surveyed about their recent purchases. 715 of those people surveyed bought a television within the last year, 461 bought a video game system within the last year, and 292 bought both.
Show that a Poisson PMF is the limit of a binomial PMF with n approaching infinity and p approaching zero in such a way that np = µ= constant .
question a study is conducted in patients with hiv. the primary outcome is cd4 cell count which is a measure of the
If you randomly sampled a population and obtained ten observations with a mean of zero, would you accept that the population was normal with μ = 2.0 and σ2= 2.0? Why, or why not
If the 95% confidence interval for the mean of a variable of interest obtained from a sample for values contains a hypothesized value, µ1, of the mean.
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