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      MAT123 Spring 2025 Notes



Wed, 4/23, 9.1, 9.2
9.1 Null and Alternative Hypotheses
a) Define null and alternative hypotheses for mean and proportion
9.2 Outcomes and the Type I and Type II Errors
a) Define Type I and Type II error and their meaning in the context of applied problems
Watch in
"All of Statistics I in 2.5 Hours" video the part on"Hypothesis Testing"
starting at (hours:minutes:seconds) 1:58:17
Read the matching page
hypothesis testing in Stat I in 2 Hours
Watch the
Hypothesis Tests pdf file video
Read Hypothesis Testing for vocabulary & symbols
Just scan "Hypothesis Tests"
the page to see what sort of tests are discussed in Statistics II
Play with
Hypothesis.Tests.2022.xls -- hypothesis testing spread sheet
Check out/write your own hypothesis test
using the TI calculator sample below.




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