University:
Everett Community College
Course:
MATH 152| Calculus II
Academic year:

2010
Views:

491

Pages:

2
Author:

Isaiah Vincent

Confidence Intervals TI 83/84 Estimating Population Parameters Estimating a Population Proportion 1. Press Right arrow to Tests, then scroll down and select 1-PropZInt 2. Input: x = number of successes n = sample size C-Level = Confidence Level Highlight Calculate and press [ENTER] 3. Output: Confidence Interval p̂ = sample proportion = n = sample size Estimating a Population Mean (μ): σ Known 1. Press Right arrow to Tests, then scroll down and select ZInterval 2. Choose either Data or Stats For Data: σ: Standard Deviation of the Population List: Name of the list where data is stored Freq: This will always be “1” C-Level: Confidence Level in decimal form For Stats: σ: : n: Standard deviation of the population Mean of the sample Sample size C-Level: Confidence Level in decimal form 3. Highlight Calculate and press [ENTER] Estimating a Population Mean (μ): σ Not Known 1. Press Right arrow to Tests, then scroll down and select TInterval 2. Choose either Data or Stats For Data: List: Enter the name of the list where you have entered the data Freq: Always 1 C-Level: Confidence Level in decimal form For Stats: : Sample mean S : Sample standard deviation n: Sample size C-Level: Confidence Level in decimal form 3. Highlight Calculate and press [ENTER]

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