IBM SPSS Essentials by John T. Kulas

Author:John T. Kulas [Kulas, John T]
Language: eng
Format: epub
ISBN: 9781119417446
Publisher: Wiley
Published: 2021-03-09T17:37:39+00:00

Discussion Questions

What would happen to my obtained t if I ran a paired‐samples t‐test situation as an independent‐samples t‐test?

How practical is the one‐sample t‐test?

Your parents claim college students sleep too much. They claim the average amount of sleep “normal” people get is eight hours. You survey 7 of your classmates, who sleep 9, 11, 7, 8, 13, 12, and 10 hours per night. Do college students sleep more than what your parents claim is “average”?

You believe llamas from Peru are able to spit farther than llamas from Australia. You travel to Peru to measure the distance llamas are able to spit and obtain the following: 22, 26, 28, 19, 24 cm. You catch a flight to Auburn, Australia, and find a llama farm where you are able to measure the distance to which those llamas are able to spit: 20, 15, 40, 23, and 18 cm. Are llamas from Peru able to spit (on average) further than the llamas from Auburn, Australia?

You want to know the effect of caffeine on reaction time. You recruit your friends on two different occasions. Once you have them drink five cups of coffee before you throw foam‐tipped darts at them; on the second occasion you have them drink five cups of water before trying to hit them with darts. You record the following number of hits (out of 20 throws):

Caffeine

Water

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