STATISTICS AND PROBABILITY Quarter 3-Week 10 Module 4: T-DISTRIBUTION AND CONFIDENCE INTERVAL

LESSON 2: Sample Size Determination

What's More Activity 1: Solve Me! Directions: Analyze and Solve the following problems completely. Write the solution in a coupon bond. 1. The mean and standard deviation for the quality grade - point averages of a random sample of 36 college seniors are calculated to be 2.6 and 0.3 respectively. Find the

a. 95% confidence interval for the mean of the entire senior class

b. 99% confidence interval for the mean of the entire senior class

2. A sample of 10 measurements of the length of a chip gave a mean of 2.36 cm and a standard deviation of 0.06 cm. Find the

a. 95% confidence limits

b. 99% confidence limits

What's More Activity 1: Solve Me! Directions: Analyze and Solve the following problems completely. Write your solution in a coupon bond. 1. The mean and standard deviation for the quality grade - point averages of a random sample of 36 college seniors are calculated to be 2.6 and 0.3 respectively. Find the a. 95% confidence interval for the mean of the entire senior class b. 99% confidence interval for the mean of the entire senior class 2. A sample of 10 measurements of the length of a chip gave a mean of 2.36 cm and a standard deviation of 0.06 cm. Find the a. 95% confidence limits b. 99% confidence limits