Hi everyone! Read through the material below, watch the videos, work on the Excel lecture and follow up with your instructor if you have questions.


Learning Outcomes.

  • Determine if the data supports a hypothesis at a given significance level using known distributions.

Topic. This lesson covers: Hypothesis Testing with Known Standard Deviation

WeBWorK. Sets 9.1 & 9.2



Hypothesis Testing and p-values

The Applied View

Watch the video Tests of Significance.

  1. In the 1970s, statistician Ron Thisted did a statistical analysis of Shakespeare’s vocabulary. Based on his analysis he created a computer program. What could his program tell you about a Shakespearean poem?
  2. In analyzing a poem to see whether or not it was authored by Shakespeare, Thisted set up a null hypothesis and an alternative hypothesis. State those hypotheses in words.
  3. What was the approximate distribution of the number of unique words per poem in Shakespeare’s poems?
  4. Thisted observed 10 unique words in the newly discovered poem. Was that sufficient evidence to conclude that Shakespeare did not write the poem?
  5. Which is better evidence against the null hypothesis, a large p-value or a small p-value?

Exit Ticket

The USDA limit for salmonella contamination for chicken is 20%. A meat inspector reports that the chicken produced by a company exceeds the USDA limit. You perform a hypothesis test to determine whether the meat inspector’s claim is true. When will a type I or type II error occur? Which is more serious?