Wednesday HW

Wednesday's HW = Confidence Intervals Practice!

• Confidence Intervals Intro HW (Click Me and do yo' HW!)
• Questions a, c, and e are things we've done either today or in our notes...you got those
• For question b--read the context! What is the question asking? Also consider WHY we use confidence intervals (the first thing you wrote in your chapter 19 notes about confidence intervals)
• For question d: the math...
• This is based on two things: using your graphing calculator and what we learned today....
• First, create the confidence interval on your graphing calculator; copy the entire output screen on your paper--the name of the interval, the interval itself, p-hat, and n
• Next, SHOW THE FORMULA we developed today with correct values substituted...
• Substitute the values of p-hat and n in all appropriate places
• The value of z* for this context is 1.645. We'll learn how to find this number tomorrow.

ALWAYS check your answers! Here's a key to the homework:

• Confidence Intervals Intro HW KEY (Click Me; did you ace your HW?)

If you were out today, here's the classwork we did--get this done and you'll be all caught up!

• Investigating Confidence Intervals Classwork (Weds 2/19)