10. Why is it difficult to dissolve sugar in cold water? (a) Solubility decreases as temperature increases (b) No effect of temperature on solubility (c) Solubility decreases as temperature decreases (d) Solubility remains the same in cold and hot water
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a hospital based cross-sectional study, it is planned to estimate the mean D-dimer level among COVID-19 patients. From previous literature, the standard deviation was found to be 200 ng/mL. If the researchers want to estimate the mean with a 50 ng/mL precision and 95% significance level, what is the minimum sample size required?
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i think of c) solubility decreases as tempreature decreases
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