TDIST(A2, 30, 1)
TDIST(0.5, 1, 2)
TDIST(x, degrees_freedom, tails)
x- The input to the t-distribution function.
degrees_freedom- The number of degrees of freedom.
tails- Specifies whether the calculated distribution will be one- or two-sided. (1 for one-tailed distributions, 2 for two-tailed distributions).
NOMDIST: The NORMDIST function returns the value of the normal distribution function (or normal cumulative distribution function) for a specified value, mean, and standard deviation.
BINOMDIST: Calculates the probability of drawing a certain number of successes (or a maximum number of successes) in a certain number of tries given a population of a certain size containing a certain number of successes, with replacement of draws.
EXPONDIST: Returns the value of the exponential distribution function with a specified lambda at a specified value.
NEGBINOMDIST: Calculates the probability of drawing a certain number of failures before a certain number of successes given a probability of success in independent trials.
PROB: Given a set of values and corresponding probabilities, calculates the probability that a value chosen at random falls between two limits.