Find where to buy the TI-84 Plus CE graphing calculator in a variety of bold, fun colors.
Download free 90-day trial versions of the most popular TI software and handheld emulators.
Any TI graphing calculator can be programmed using a language called TI-Basic. In this blog post, learn how to get started coding with your TI calculator.
Customize your summit experience with sessions on math, STEM, coding and more.
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 1995-2019 Texas Instruments Incorporated. All rights reserved.