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

A. alternative hypothesis

B. null hypothesis

C. analyst

D. facts

Business system consists

A. Target fixing

B. Markets

C. Business forecasting for products

D. All of the above

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.

A. Statements I and II are true

B. Statement II is true

C. Statements II and III are true

D. Statement III is true

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

A. Transaction processing

B. Application processing

C. Data processing

D. Information processing