Description
Exercises 8.1, 8.8 Q3. The following are samples obtained from a population that follows a normal distribution 69, 47, 175, 70, 53, 64, 74, 52, 58, 53, 64, 49, 70, 65, 70, 16, 67, 55, 42, 72, 61, 65, 77, 70, 60, 39 i. Find the Sample mean, variance and standard deviation ii. Use them to estimate the parameters of the normal distribution (µ and σ) iii. Find and eliminate any possible outliers. a. Recalculate the sample mean, variance and standard deviation. b. Use the new values to recalculate the parameters of normal distribution. c. If the population followed Normal (60, 10), did eliminating outliers improve the accuracy of your estimate?
