Question 1:At a dinner party, a total of 125 people ate the roasted chicken. Among them, 45 who consumed roasted chicken became ill while the others were healthy. Calculate the Attack Rate.

Question 2:In a university there are 2100 students, 1400 are boys and 700 are girls. What is the sex ratio?

Question 3:In a country 5,157,550 babies were born in the year 2021. The midyear population of the country was 950,476,980. What will be the crude birth rate for the year 2021 for this country?

Question 4:Look at the following data about Covid 19 pandemic in Kingdom of Saudi Arabia and find the Crude death rate per 100,000.

• Total number of death due to Covid-19 infection in 2020 = 8,875
• Reference population for the year 2020 = 35,997,107

Question 5:Discuss the interrelationship between prevalence and incidence describing the effects with increase and decrease. (Word limit = 150)