Getting Started: Mean Height Of A Population - Texas Instruments TI-83 Manual Book

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 cm. and a standard deviation of 6.35 cm.
(
randNorm(165.1,6.35,90)
169.43 168.33 159.55 169.97 159.79 181.42 171.17 162.04 167.15 159.53
1. Press ... Í to display the stat list
editor.
Press } to move the cursor onto
then press y [
displayed on the bottom line. The
indicates that alpha-lock is on. The
existing list name columns shift to the
right.
Note: Your stat editor may not look like the one
pictured here, depending on the lists you have
already stored.
2. Enter [ ] [ ] [
H G H
and then press Í. The list to which
you will store the women's height data is
created.
Press † to move the cursor onto the first
row of the list.
bottom line.
Ë
3. Press
169 43
value. As you enter it, it is displayed on the
bottom line.
Press Í. The value is displayed in the
first row, and the rectangular cursor
moves to the next row.
Enter the other nine height values the
same way.
13-2 Inferential Statistics and Distributions
with a seed of 789).
Height (in cm.) of Each of 10 Women
]. The prompt is
Name=
INS
] [ ] at the
Name=
T
is displayed on the
HGHT(1)=
to enter the first height
, and
L
1
Ø cursor
prompt,