2. Now she's been dead nearly as many years
As that girl lived. And of this circumstance
There is nothing to say at all,
Its silence silences
(a) When did the poet's mother die?
(b) What is 'this circumstance'?
(c) Explain: 'Its silence silences'
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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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