Question

Researchers used two footballs of the same size to examine the effect of helium on kicking distance. one football was filled with air, and the other was filled with helium. eleven people participated in the study. each person kicked the football filled with air and the football filled with helium, and the kicking distances, in yards, were recorded. the football that was kicked first was determined by the flip of a fair coin, and the people did not know which football was filled with air and which was filled with helium. what type of study was conducted by the researchers and, of the following, which is the appropriate t-interval for inference?

Answer 1

The appropriate t-interval for inference is a t-interval for a difference between means for independent samples.

What is T interval known for?

T interval is known to be used in any given situations where the given sample size is known to be little and population standard deviation is said to be not known.

Note that a small sample size such as l (n≤30) makes the T-interval comes into the right place and as such, the appropriate t-interval for inference is a t-interval for a difference between means for independent samples.

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