HW and STUDY!

Wednesday's HW #1:

• Please complete AND GRADE the "Inferences for Means" worksheet (below).
• Here is a link to the answer key (so you can grade your work)
• You will not earn full homework credit if you do not grade/correct your homework
• Click Me for the HW Answer Key!

Wednesday HW # 2: STUDY!  (Inference for Means Vocab Quiz tomorrow)

• When do we use a t-distribution v. a z distribution (Normal model)?
• Know the characteristics of the t-distribution....
• Shape
• How does it compare/contrast with a Normal model
• How do degrees of freedom impact the shape
• Confidence Interval
• Hypothesis Test
• P-Value
• Interpret Confidence Level
• Power
• Alpha, Beta
• Statistic v. Parameter
• Standardized Test Statistic
• Critical Value
• Point Estimate
• Margin of Error
• Statistic v. Parameter
• Standard Error
• Null Hypothesis
• Alternative Hypothesis
• Know how to write conclusions for any hypothesis test
• Effect of n on ME, standard deviation, with of interval
• Effect of critical value on ME, standard deviation, width of interval

Today's Class Recap:

• Stamp = can we determine a causal relationship? (2018 part a)
• HW Answers/Questions (5 MC from last night)
• Ch. 24 Wrap Up Notes:
• What stands out from our work yesterday--what details do we need to pay attention to?
• One example for our notes (coffee shop wait times...)
• Created a 2 sample t interval (in our notes) independently
• What does the confidence level mean?
• Tomorrow we'll finish these notes before our test on TUESDAY!