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Clearly, life is not distributed evenly around the planet. Each species has a set of environmental conditions - temperature, humidity, salinity, oxygen levels, etc. - that it needs for survival. Of course, there is a certain tolerance range for each of these needs for each species, and the probability of finding members of a given species within this tolerance range is usually approximately normal. Suppose the tolerance range for temperature X in a certain species measured in degrees centigrade is N(35, 17). (b) Find P(3<X<51). 5. A laboratory weights filters from a coal mine to measure the amount of dust in the mine atmosphere. Repeated measurements of the weight of dust on the same filter has a standard deviation of σ = 0.08 milligram (mg) and mean 123 mg. (a) If 3 weightings of this filter are made what is the distribution of this mean? What can be said about the mean and standard deviation of this distribution? (b) If 32 weightings of this filter are made what is the distribution of this mean? What can be said about the mean and standard deviation of this distribution?
Calculate the maximum reduction in the standard deviation
What order quantity do you recommend that Mac order from the scanner manufacturer and how much more expensive is the next lowest cost option
in a regression analysis a nurse researcher found a correlation of .82 between pain relief scores and satisfaction with
A medical researcher wishes to estimate what proportion of babies born at a particular hospital are born by Caesarean section. In a random sample of 100 births at the hospital, 34% were Caesarean sections. Find the 95% confidence interval for ..
Using the information from part by hand, calculate a 90 confidence interval for the difference of the means for the two time periods.
a) Explain why ground-wave propagation is more effective over sea water than dessert terrain. b) Why do stations in the AM broadcast band always use vertically polarized antennas
The most recent Davenport student profile
The Center for Epidemiologic Studies Depression Scale (CES-D scale) is often utilized to measure depressive symptomology (Radloff, 1977). It is a self-assessment that is completed by the individual. The CES-D contains 20-items rated on a 4-poin..
What is the deference between a complete factorial design and an incomplete factorial design and explain the difference between a two-way AMOVA and a three-way ANOVA.
The population characteristics of two random variables
"Range of optimality" describes the impact of simultaneous changes in objective function values and right-hand-side values.
What demographic variables were measured at least at the interval level of measurement and what statistics were used to describe the length of labor in this study? The researchers analyzed the data they collected as though it were at what level of me..
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