20th batch part 2

1. 16. Confidence interval
(a)
(b)
(c) Confidence intervalnarrowswhensamplesize increases
(d) Is calculatedbyusingstandarddeviation
(e)
17. True or false regardingstatistical tests
(a) An independentttestisdone to compare the two means
(b) Z testis of choice whensample size issmall
(c)
(d) Pairedt testcan be usedto compare two samples
(e)
18. Notificationof adisease
(a) Is forall communicable disease
(b)
(c) isrelatedtosecondaryprevention
(d) done withtreatmentof the patient
(e) isa legal dutyof a doctor
19. Regardingcommunicablediseases
(a) air conditionsare the source of leptospirosis
(b)
(c)
(d) TB is a source epidemic
(e) Haemophilusinfluenzaisanotifiable disease
20. Special surveillance are done for
(a)
(b) dengue fever
(c) pneumococcal pneumonia
(d)
(e) hepatitisA
21.
(a) isthe age sex relationshipof apopulation
(b) affected bybirthrates
(c)
(d) not affectedbychange inmortality
(e) barrel shapedinmiddle income countries

2. 22.
(a) Describesthe mortalityof apopulation
(b) Uses a hypothetical cohortof new borns
(c)
(d)
(e) Techniquesare notapplicable innonmedical setting
23. In calculatingthe followingmortalityrateslive birthsisthe denominator
(a) Perinatal mortalityrate
(b)