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Questions: 1. What are the characteristics of a bivariate distribution?
2. What is meant by the statement "Variable X and variable Y are correlated"?
3. Tell how X and Y vary in a positive correlation. Tell how they vary in a negative correlation.
In this problem, we develop a weak law of large numbers for a correlated sequence X1, X2,... of identical random variables. In particular, each Xi has expected value E[Xi] = µ, and the random sequence has covariance function
Normal adult Mean Temperature is 98.2 and standard deviant is 0.62 with normal distribution. If 16 people are randomly selected determine the probability that their mean body temp is below 98.5 degrees.
A radio station that plays classical music has a "By Request" program each Saturday night. The percentage of requests for composers on a particular night are listed below:
it has been shown that people drive 5 - 10mph faster than the posted speed limit on a highway. it has been thought that
Critically discuss some examples of descriptive statistics? Why are they used in research? What is a confidence interval?
It has been hypothesised that the probability of having an asthma attack on a particular day may vary across the days of the week. Baibergenov et al. (2005) report a longitudinal study in which the number of emergency department admissions due to ..
Use Excel's CORREL function to calculate the correlation between the two input variables. It should be close to 0.7.
A box contains four 40-W bulbs, five 6-W bulbs and six 70-W bulbs, if three bulbs are selected without replacement randomly. What is the probabilty that three are 70-W bulbs?
A local TV network wants to run an informal survey of individuals who exit from a local voting station to ascertain early results on a proposal to raise funds to move the city-owned historical museum to a new location. How might the network sampl..
A one-way analysis of variance test was significant at the p = 0.009 level. Use MSE = 26.92 to find the Bonferroni 95% confidence intervals for all pairwise differences. Draw a graph to represent the results.
What is the risk of having a heart attack for current smokers? What is the risk of having a heart attack for current non-smokers?
What are the assumptions and requirements for an LP model to be formulated and used? Under what conditions will an LP problem: be unbounded? be infeasible? have more than one optimal solution?
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