Answer: The critical flicker frequency (cff) is the
Chapter 10, Problem 10.42(choose chapter or problem)
The critical flicker frequency (cff) is the highest frequency (in cycles/sec) at which a person can detect the flicker in a flickering light source. At frequencies above the cff, the lightsource appears to be continuous even though it is actuallyflickering. An investigation carried out to see whether trueaverage cff depends on iris color yielded the following data(based on the article The Effects of Iris Color on CriticalFlicker Frequency, J. General Psych., 1973: 9195):a. State and test the relevant hypotheses at significancelevel .05 by using the F table to obtain an upper and/orlower bound on the P-value. [Hint: x2ij 13,659.67and CF 13,598.36.]b. Investigate differences between iris colors with respectto mean cff.
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