1. Warm-up 8.2 Testing a Proportion (Day 2)

2. 8.2 Components of Significance Test (Day 2) Type I and Type II Errors next block! The steps to go through for a significance test. Problem 1: A large city’s Dept. of Motor Vehicles claimed 80% of candidates pass the driving test, but newspaper reports of 90 randomly selected local teens who had taken the test only 60 passed. Go through the 4 steps to determine if the proportion of teens that passed the reported by the newspaper was statistically significant.

3. Problem 1: A large city’s Dept. of Motor Vehicles claimed 80% of candidates pass the driving test, but newspaper reports of 90 randomly selected local teens who had taken the test only 60 passed. STEP 1: STEP 1: Check the 3 conditions then give the name of the test you are about to perform. STEP 2: STEP 2: State the hypothesis. (Null and possible Alternative Hypothesis)

4. Problem 1: A large city’s Dept. of Motor Vehicles claimed 80% of candidates pass the driving test, but newspaper reports of 90 randomly selected local teens who had taken the test only 60 passed. STEP 3: STEP 3: Calculate the critical value, test statistic and p-value. *Demonstrate these with a sketch of the distribution curve as well! STEP 4: STEP 4: Write a conclusion. Include an explanation of the p- value in context and in the format of a ratio.

5. Problem 2 Advances in medical care such as prenatal ultrasound examination now makes it possible to determine a child’s sex early in the pregnancy. A study from Punjab, India reports that, in 1993, one hospital reported 56.9% boys in 550 live births. It’s a medical fact that male babies are slightly more common than female babies. The baseline is 51.7% boys in all live births. STEP 1: STEP 1: Check the 3 conditions then give the name of the test you are about to perform.

6. A study from Punjab, India reports that, in 1993, one hospital reported 56.9% boys in 550 live births. It’s a medical fact that male babies are slightly more common than female babies. The baseline is 51.7% boys in all live births. STEP 2: STEP 2: State the hypothesis. (Null and possible Alternative Hypothesis) STEP 3: STEP 3: Calculate the critical value, test statistic and p-value. *Demonstrate these with a sketch of the distribution curve as well! STEP 4: STEP 4: Write a conclusion.

7. Now and next block!!! Now: Complete both sides of the Inference for Proportions Worksheet Re-read notes. Know vocabulary, formulas and the steps for completing a significance test. Next block: We will review the answers to the Inference Proportions Worksheet We will be going over the two types of errors. There will be a quiz on 8.1 and 8.2 (excluding the information on the two types of errors)