AP Stat Do Now

1
AP Stat - Do Now

• Take a red pen, a scoring guideline sheet, and
  your Chapter 4 Re-Assessment (if you took one)
  and grade it. Write your score on the
  re-assessment on the top as well as the average
  of the two grades
• When done, form into groups of four and put your
  heads together to answer each of the reflection
  questions on big pieces of paper. Take as many
  sheets as you need. Try to come to a consensus
  on each question so that what goes on paper is
  the best your group has to offer.

2
Objectives

• Chapter 6 The Standard Deviation as a Ruler and
  the Normal Model
• 1) Review problem 8 from the previous HW
  assignment
• 2) Self-evaluate Chapter 4 Re-Assessments
• 3) Reflect upon the first semester in groups and
  as a whole

3
p. 100 8b
DURATUNES that wont make 8 hours (z -1.5)
ROCKREADY that wont make 8 hours (z -2.67)
0.38
Cleary, choose Rock Ready!
6.7
4
p. 100 8c
ROCKREADY that wont make 16 hours (z 2.67)
DURATUNES that wont make 16 hours (z 2.5)
99.4
99.6
There is actually a 0.2 greater chance of a
DuraTunes player being able to make 16 hours (or
longer)!!! However, I would still go RockReady
based on their mean and std. dev.
5
AP Stat - Homework

• p. 132-135 7, 8, 11, 12, 14-16, 23 (due Thurs.)
• Quiz Friday on Ch. 7 and Standardized (z) Scores