Business Statistics

Addition theorem states that if two events A and B are mutually exclusive the probability of occurrence of either A or B is given by

Given
1. One-to-one
2. One-to-many
3. Many-to-many
The above relation indicates to the

Binomial distribution was developed by

An experimenter tests the hypothesis that physical exercise helps people's mood (makes them happier). Subjects in the ex perimental group participate on Monday and Tuesday and those in the control an Wednesday and Thursday. What is the extraneous (confounding) variable?

Which of the following measures of central tendency is used when the data changes over a period of time?

Bessel's correction's

Which of the folIowing represents primary data?

Match the following

List-I (Types of system)	List-II (Elements)
a. Data processing	1. Sales
b. Transaction	2. Process processing management
c. Functional system	3. Focus on computing
d. Integrated	4. Transaction execution

Given

What will be AB in above diagram as per probability theory?

Suppose that in a box of 80 bulbs packed, the mean number of defects per box is 0.3. What percent of bulbs will have no mistake?