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Identify the variables you have chosen to analyze, and describe each of their scales of measurement (nominal, ordinal, interval, or ratio).
Biostatistics POPH90013 Assignment. What percentage of data is missing for the variable smoke? What percentage of data is missing for the variable smoke
A researcher hypothesizes that people who listen to music via ear buds have greater hearing loss than those in the general population. On a standard hearing test, the mean (μ) is 24.75. Higher values indicate better hearing
Suppose the age of buyers were collected and the data follows the bell curve (a normal distribution). The buyers had an average age of 41 years and a standard deviation of 7. You plan to take a random sample of 68 buyers and calculate a sample mean.
Consider the data set shown in Table, indicating hourly summaries of the temperature for a baking oven measured four times per hour.
Develop three different optimisation techniques (LP, ILP and NLP) on your modelling and hold-out data.- Formulate your model by writing decision variables, objective functions and constraints.
What types of tests were used for each of those variables and was the test used a reasonable selection for each of these test?
Use a regression model with dummy variables as follows to develop an equation to account for seasonal effects in the data. Qtr1 = 1 if Quarter 1, 0 otherwise; Qtr2 = 1 if Quarter 2, 0 otherwise; Qtr3 = 1 if Quarter 3, 0 otherwise.
The length of time a system is "down" (that is, broken) is described (approximately) by the probability distribution in the Table 7.6.2. Assume that these downtimes are exact. That is, there are three types of easily recognized problems that always t..
What was the prevalence of TB in the screened community on January 1st - what was the prevalence of TB on June 30th and calculate the prevalence of serious defects in this population at the time of birth.
In this assignment, you will propose and test a set of hypotheses regarding the relationships among a set of characteristics of professors and classes
Statistics Homework - From this plot, (a) recreate the matrix of factor loadings, in tabular form (hint: a ruler should make this easy)
A few days ago you answered a question I had on probability. The original equation was R(t)=a^(-bt). In your answer you changed it to R(t) = a* e^(-bt). Can you explain why you added the e?
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