Pleasant touch sensations measured

Reference no: EM131821355

Researchers studying pleasant touch sensations measured the firing frequency (impulses per second) of nerves that were stimulated by a light brushing stroke on the forearm and also recorded the subject's numerical rating of how pleasant the sensation was. The accompanying data was read from a graph in the paper "Coding of Pleasant Touch by Unmyelinated Afferents in Humans" (Nature Neuroscience, April 12, 2009).

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a. Estimate the mean change in pleasantness rating associated with an increase of 1 impulse per second in firing frequency using a 95% confidence interval. Interpret the resulting interval.

b. Carry out a hypothesis test to decide if there is convincing evidence of a useful linear relationship between firing frequency and pleasantness rating.

Reference no: EM131821355

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