Find where to buy the TI-84 Plus CE graphing calculator in a variety of bold, fun colors.
For a limited time, download free versions of the most popular TI software and handheld emulators.
Bring a new dimension of learning to your classroom with activities that put math in motion.
Explore teaching strategies to help students succeed on the SAT® and ACT® math tests using TI technology.
Drive deeper, more relevant understanding of science in middle grades and high school.
Students use confidence intervals to estimate the difference of two population proportions.
Problem 1, students estimate the true difference between two population proportions in order to introduce the formulas for the margin of error and confidence interval.
The scenario describes the numbers of men and women that used coupons at a grocery store. Students use the TI-84 Plus C to find each sample proportion and the difference between the sample proportions.
Students construct the confidence interval by subtracting from and adding to the difference of the sample proportions.
Students can then find the margin of error. They will first need to use the invNorm command to calculate the z score.
Students should store all their values for future calculations.
© Copyright 1995-2020 Texas Instruments Incorporated. All rights reserved.