Probability & Statistics


SYLLABUS

UNIT-I

RANDOM VARIABLES: Probability- Conditional Probability- Bayes Theorem, Random experiment, sample space, events, Random variable, Discrete and Continuous variables, mathematical expectation and properties of Moment generating Functions(Without proof).

UNIT-II

DISTRIBUTIONS Binomial, Poisson distributions (MGF, Mean and Variance without proofs), Normal distribution (MGF, area and symmetric properties without proofs) -related properties, Gamma and Weibull distributions.

UNIT-III

SAMPLING DISTRIBUTIONS Introduction, Population and samples, Sampling distribution of mean for large and small samples (with known variance), proportion - Point and interval estimators for means and proportions (for large and small samples), Maximum error.

UNIT-IV

TESTING OF HYPOTHESIS Introduction, Null and alternative hypothesis, Type I and Type II errors, one tail, two-tail tests, Level of Significance. Tests concerning means, proportions and their differences using Z-test. Student’s t-test, F-test and 2 test of goodness of fit and independence of attributes.

UNIT-V

CORRELATION & CURVE FITTING Introduction, simple correlation, regression, fitting of straight-line, second-degree curves, exponential and power curves by method of least squares.