Suppose that in key punching of 80 column IBM cards, the mean number of mistakes per card is 0.3. What per cent of cards will have no mistake?

In statistical analysis, the burden of proof lies traditionally with

Business system consists

From the following statements choose the correct statements.
Statement I A statistic is a characteristic of a population.
Statement II The standard error of mean is the standard deviation of the sampling distribution.
Statement III The standard error of mean decreases in direct proportion to sample size.

. . . . . . . . processing is designed to process more than one type of transactions to bring out the specific business results in one or more business functions.