After applying a statistical test, an investigator gets a p-value of 0.01. What does this indicate about the null hypothesis?
AThere is a 1% probability of incorrectly rejecting the null hypothesis when it is true.
BThe test has a 99% chance of detecting a true effect if it exists.
CThe null hypothesis is likely to be rejected.
DThere is a 1% probability of observing the data, or something more extreme, if the null hypothesis is true.
You have diagnosed a patient clinically as having SLE and ordered 6 tests out of which 4 tests have come positive and 2 are negative. Which of the following values are required to determine the probability of SLE at this point?
ARelative risk of SLE in the patient
BIncidence and prevalence of SLE
CPrior probability of SLE, sensitivity and specificity of each test
DIncidence of SLE and the predictive value of each test
If a biochemical test gives the same reading for a sample on repeated testing, it is inferred that the measurement is -
ASpecific
BAccurate
CSensitive
DPrecise
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