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TI-83 Plus Inferential Statistics and Distributions 381
Chapter 13:
Inferential Statistics and Distributions
Getting Started: Mean Height of a
Population
Getting Started is a fast-paced introduction. Read the chapter for details.
Suppose you want to estimate the mean height of a population of women given
the random sample below. Because heights among a biological population tend
to be normally distributed, a
t
distribution confidence interval can be used when
estimating the mean. The 10 height values below are the first 10 of 90 values,
randomly generated from a normally distributed population with an assumed
mean of 165.1 centimeters and a standard deviation of 6.35 centimeters
(
randNorm(165.1,6.35,90
) with a seed of 789).
Height (in centimeters) of Each of 10 Women
169.43 168.33 159.55 169.97 159.79 181.42 171.17 162.04
167.15 159.53