W11_L5: Hypothesis testing: standard testing methods: z-test

Welcome to Week 11 Lecture 5 of the course "Statistics for Data Science - II" by Prof. Andrew Thangaraj Full Course: https://study.iitm.ac.in/ds/course_pages/BSMA1004.html Video Overview In this lecture, we introduce the Z-test, one of the most fundamental methods in hypothesis testing. You’ll learn how to test the mean of a population when the variance is known, define test statistics, and determine rejection and acceptance regions. We also explain how to calculate the p-value and interpret the significance level in practice. Through worked examples, the lecture demonstrates the step-by-step methodology of the Z-test, helping you connect theory to real applications. About IIT Madras' online Bachelor of Science programme IIT Madras offers four-year BS programmes that aim to provide quality education to all, irrespective of age, educational background, or location. The BS programme has multiple levels, which provide flexibility to students to exit at any of these levels. Depending on the courses completed and credits earned, the learner can receive a Foundation Certificate from IITM CODE (Centre for Outreach and Digital Education), Diploma(s) from IIT Madras, or BSc/BS Degrees from IIT Madras. For more details Visit: https://www.iitm.ac.in/academics/study-at-iitm/non-campus-bs-programmes #ZTest #HypothesisTesting #StatisticalInference #PValue #SignificanceLevel #TestStatistic #MeanTesting #Statistics #DataAnalysis #NormalDistribution #ZScore #NullHypothesis #AlternativeHypothesis #Sampling #AcceptanceRegion #RejectionRegion #StatisticsForBeginners #Lecture #Tutorial