Ch.9: Sampling Distributions: MeanWorksheetSee 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

# Small Sample Confidence Interval for a Population Mean

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Concept #1: Determining the Small Sample Confidence Interval for a Population Mean

Concept #2: Determining the Small Sample Confidence Interval for a Population Mean: Intro

Practice: Books get more and more expensive every semester. 25 randomly selected students in your school spent, on average $500 with a standard deviation of$50. Construct a 98% confidence interval for the true spending on books.

Practice: People always purchase gifts on Black Friday. The average spending on this day is $1,000 with a standard deviation of$256. These estimates are based on a sample of 16 randomly selected Americans. Construct a 95% confidence interval for the true spending of Americans on Black Friday.

Practice: College students are said to binge drink more than any other population of young adults. You randomly select 9 people in your school and find that the average number of drinks consumed each week is 10 with a standard deviation of 5. Construct a 90% confidence interval for the true average number of drinks college students at your school consumer each week.