List of top Engineering Mathematics Questions on Probability asked in GATE Biomedical Engineering

A group of four people were residing together when a new virus was detected. If the probability of each person being infected is 0.1, then the probability that at least two of them are infected is ________. Give your answer rounded off to 3 decimal places.

A random noise signal with Gaussian distribution has a mean of zero and a standard deviation of 1 mV. The probability that an instantaneous measurement of this signal is greater than 2 mV or lesser than -2 mV is ________.
Give your answer as a percentage rounded off to the nearest integer.