As a manufacturer of guitars, a major corporation wants to estimate the proportion of guitar players who are right-handed. How many golfers must be surveyed if they want to be within 0.02, with a 95% confidence?
a. Assume that there is no prior information that could be used as an estimate of p.
b. Assume that the manufacturer has an estimate of p found from a previous study, which suggests that 75% of guitar players are right-handed.
a. n = 2401
b. n = 1801
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