Question

Too A study has been just published on the length of the incubation period of COVID-19 (Annals of Internal Medicine, May 2020). Based on a sample of 181 units, a 95% confidence interval for the median incubation period was estimated to be (4.5, 5.8) days. Hence, ... ... we are 95% confident that the sample median lies within 4.5 and 5.8. ... the probability that the population median lies within 4.5 and 5.8 is 0.95. ... we are 95% confident that the population median lies within 4.5 and 5.8 the probability that the sample median lies within 4.5 and 5.8 is 0.95. 1 poin Consider the time series of the price of a basic computer, adjusted for inflation, measured monthly from 1970 to 2000. Do you think this series is likely... ... to include a seasonal component? ... not to include a seasonal component?

Answer 1

• Confidence Interval
  The confidence interval is the region on the parametric space of the parameter of interest which may contain the parameter with a certain degree of confidence. Alos, it should be noted that, we are interest with parameter, which mimics the population value and not the sample value.
  
  Hence, according to the definition, the correct option is:
  
  C) we are 95% confident that the population median lies within 4.5 and 58 .
  
  
• Inflation is a cyclical event, which occur over a period of some years.
  The data provided is monthly data.
  
  Hence, though the data is adjusted for inflation, seasonal component might be included.
  
  Hence, the correct option is:
  A) is likely to include a seasonal component.
  
  

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