State the two groups of factors which affect the profitability of mining
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(i) Richness or Grade of the Ore (ii) Size of Deposit (iii) Method of Mining (iv) Accessibility (v) Transportation Facilities (vi) Stage of Industrial Development (vii) Technology.
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Explanation:
Salt-free diets are often prescribed to people with high blood pressure. The following data values were obtained from an experiment designed to estimate the reduction in diastolic blood pressure as a result of consuming a salt-free diet for 2 weeks. Assume diastolic readings to be normally distributed. (a) Is there evidence that diastolic blood pressure is reduced by having salt-free diets? Use alpha = 0.05. (b) Construct the 95% confidence interval for the difference in the mean blood pressures.
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