QUESTION 3

1. In Lianget al, in theMethodssection, underStudy design and data sources, there is information about the number of infected patients and deaths. Which of the following statements is true?

		Based on the number of infections and number of deaths, we have no good way to estimatetheoverall probability of dying from COVID infection to be0.0554.
		The sample size is too small to be meaningful
		Based on the number of infections and number of deaths, we canestimatethe overall probability of dying from COVID infection to be0.0554.
		The mortality rate is a population statistic, not a sample statistic
		Based on the number of infections and number of deaths, we candeterminethe overall probability of dying from COVID infection to be0.0554.

QUESTION 4

Based on Table 1 in Liang et al, what is the standard deviation of the "Test number per 100 people"? Round your answer to one decimal place. Do not enter units.

QUESTION 5

Based on Table 1 of Lianget al, the mean and 95% CI for "Bed number per 1000 people" are 3.14 and 2.72 - 3.57 respectively. Based on these values, which of the following statements is most accurate?

		95% of the countries in the study have between 2.72 and 3.57 beds per 1000 people
		There is a 95% chance that the true mean lies in the range 2.72-3.57
		95% of all the countries in the world are likely to have between 2.72 and 3.57 beds per 1000 people
		There is a 95% chance that 3.14 is the actual mean

Link:

https://www.nature.com/articles/s41598-020-68862-x