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One study has evaluated a number of leukaemia records in a rural area. The population of the area was 35,000. In a year there were 12 leukaemia cases identified. In the general population like this, the annual rate of leukaemia is about one in 10,000. Was it evidence of a problem in the area, or was it a chance? Can you verify this? Would Binomial or Poisson distribution be suitable for modeling this case?
Test the claim of the engineering firm. Perform an appropriate hypothesis test, showing the necessary calculations and/or explaining the process used to obtain the results.
Compute the sample variance and the sample standard deviation for these data (to 2 decimals).
What can we do to help improve service and the perception of service when we are busy? One idea might be to train our team and make sure
Determine relative frequency of X=4? Generate the cumulative frequencies.
Find the probability that both products successfully complete the two-part process - Find the probability that neither product successfully completes the two-part process.
Which variable is the independent variable and which is the dependent variable? Write out the regression equation and sketch it on the plot. What percentage of the variability in the defect rate can be explained by differences in volume?
What must be the probability that a randomly chosen young adult has some education beyond high school but does not have a bachelor's degree? What is the probability that a randomly chosen young adult has at least a high school education?
You sample 100 apples from your farm's harvest of over 200,000 apples. the mean weight of the sample is 112 grams. let's assume that you know
Explain the difference between sampling with replacement and sampling without replacement.
Compare this with the summary that you wrote for previous exercise, and write short paragraph describing similarities & differences in these two views of data
Because the P-value is ? less greater than the significance level 0.05, there ? is not is sufficient evidence to support the claim that there is a linear correlation between lemon imports and crash fatality rates for a significance level of a = 0..
Consider the experiment of tossing a fair die once. Let X denote the number that occurs. Theoretically, X follows a discrete uniform distribution.
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