problem 1: Statistical unit is essential not only for the collection of data, however also for the interpretation and presentation.  Describe the statement.

problem 2: Find out the standard deviation and coefficient of skewness for the given distribution:

problem 3: A salesman has a 60% chance of making a sale to any one customer. The behavior of successive customers is independent. If two customers A and B enter, what is the probability that the salesman will make a sale to A or B?

problem 4: To verify whether a course in Research Methodology enhanced performance, a similar test was given to 12 participants before and after the course. The original marks and after the course marks are given below:

Was the course helpful? Consider such 12 participants as a sample from a population.

problem 5: prepare brief notes on:

a) Bernoulli Trials.
b) Standard Normal distribution.
c) Central Limit theorem.