10/20 QUIZ- Normal Calculations Tootsie

The number of licks it takes a student to get to the center of a Tootsie Pop is normally distributed with a mean of 180 licks and a standard deviation of 20 licks.

1. What % of students need more than 200 licks to get to the center?

2. What % of students take between 150 and 200 licks.

3. How many licks will a student need to get to the center if he wants to be ranked in the top 5% of lickers?

Turn in HW Journal, Start a New One. Details, Details, Details

Chapter 5 Reading Guide

Against All Odds

1**6. Census and Sampling **

The U.S. counts every resident every ten years — or at least tries to. Statisticians use sampling from a population as an alternative to a complete count, as utilized at a potato chip factory. Go to this unit.

Read: Ch 5.1 and complete 5.1-5.8

Suggested HW: BPS Chapter 8 p 189-205 Read and Practice

Khanacademy Types of Statistical Studies

Textbook: