One Sample T-Tests - Texas Instruments TI-Nspire CX User Manual

One sample T-tests

The United States has the highest teen pregnancy rate in the western world, despite the
fact that US teens are not more sexually active than Swedish teens, Canadian teens, or
British teens.
The mean teenage pregnancy rate in the US is 11.85%
The rates for states in the this area
( based on survey of 15-19 year olds)
Arkansas
Mississippi
Louisiana
Texas
H : There is no significant difference in the pregnancy rate of the states of
O
Arkansas, Mississippi, Louisiana and Texas compared to the rest of the
nation
H There is no significant difference in the mean teenage pregnancy rate of
A:
the four states sample and the US average.
Other Alternative hypothesis are of course possible.
17.28%
18.75
17.05%
15.25%
TI-Inspire manual 27