A 72-year-old patient with atrial fibrillation presents with…
A 72-year-old patient with atrial fibrillation presents with sudden left-sided weakness. Transesophageal echocardiography demonstrates dense spontaneous echo contrast within the left atrial appendage. What is the most likely clinical implication of this finding?
Read DetailsA manufacturer claims that 95% of its light bulbs last more…
A manufacturer claims that 95% of its light bulbs last more than 1000 hours. Test at the 3% significance level whether the true proportion is different from 95%. For the rejection criterion, should you use Zα or Zα/2? What is its numerical value of Zα or Zα/2 in this problem?
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