Ch.11: Hypothesis Testing: Part 1WorksheetSee all chapters
 Ch.1: Displaying Numeric Data 1hr & 19mins 0% complete Worksheet Ch.2: Measures of Center and Spread 2hrs & 18mins 0% complete Worksheet Ch.3: Probability and Rules 1hr & 44mins 0% complete Worksheet Ch.4: The Discrete Random Variable 53mins 0% complete Worksheet Ch.5: The Binomial Random Variable 1hr & 38mins 0% complete Worksheet Ch.6: Types of Continuous Random Variable Distributions 1hr & 35mins 0% complete Worksheet Ch.7: The Standard Normal Distribution (Z-Scores) 1hr & 22mins 0% complete Worksheet Ch.8: Using The Z-Score 1hr & 24mins 0% complete Worksheet Ch.9: Sampling Distributions: Mean 1hr & 22mins 0% complete Worksheet Ch.10: Sampling Distributions: Proportion 1hr & 31mins 0% complete Worksheet Ch.11: Hypothesis Testing: Part 1 1hr & 42mins 0% complete Worksheet Ch.12: Hypothesis Testing: Part 2 1hr & 43mins 0% complete Worksheet

# Null and Alternative Hypotheses

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Concept #1: Determining the Null and Alternative Hypotheses

Concept #2: Determining the Null and Alternative Hypotheses: Intro

Practice: A researcher wants to see if the students currently in your university are either older or younger than students from 10 years ago, who were 25-years-old on average. What are your null and alternative hypotheses?

Practice: Referring to Practice 1, what would a Type II error be?

Practice: Referring to Practice 1, if the researcher concluded that the mean age of current students is different from 25, what type of error could have occurred and what is the probability of that error?

Practice: You know coffee affects word recall. If it is known that the average number of words people can recall is 7 and you want to see if people who drink coffee recall a greater number of words, what are your null and alternative hypotheses?

Practice: Referring to Practice 4, if you concluded that coffee improves memory, and coffee actually doesn’t improve memory, what type of error has occurred?