A study is done to determine the prevalence of certain symptoms of COVID-19. In a study of 250 patients with positive COVID-19 tests, the following data was obtained: 176 had dry cough, 138 presented with high-grade fevers, and 102 had sore throats. 95 patients had dry coughs and high-grade fevers, 71 had dry coughs and sore throats, and 58 had high-grade fevers and sore throats. 41 patients presented with all three symptoms. a. What is the probability that a randomly-selected COVID-19 patient had all 3 symptoms?   b. What is the probability that a randomly-selected COVID-19 patient had exactly 1 of these symptoms (i.e. they had one symptom but not the other 2)?   c. What is the probability that a randomly-selected COVID-19 patient did not have any of these symptoms?

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.