Wednesday HW!

Tonight, please complete questions A, B, and C from our "note slides" about Chipotle (also posted below).

• I would do these on separate paper, not in your notes (but really it's up to you)
• Question C is just like what we did in our notes today--maybe do that first?
• Question B is the trickiest--we did not see an example like this in class, but I want you to try to figure it out! Maybe save this for last
• Hint: for B you will have to calculate 2 z-scores and look up 2 values in the z table....
• Question C is just like what we did in our notes today--maybe do that first?
• For each of these:
• Sketch a shaded model
• Calculate the z-score (show work)
• Use the z-table to look up the "% to the left" and then use this info to determine your "final answer"
• Hint: for B you will have to calculate 2 z-scores and look up 2 values in the z table.....
• Absent or need some help with this?
• Read the "Finding Normal Percentiles by Hand" on p. 111 AND "Working with Normal Models I: Step by Step: on p. 113.
• Watch AP Stat Guy Videos (link is on the right of this blog)
• Unit 1 Videos 8, 9, 10, and 11
• Videos 9, 10, and 11 deal with the content for today/tomorrow/Friday's class.
• Oh, and here are the answers so you can check:
• a.) 98.61%
• b.) 9.06%
• c.) 72.57%