Of a random sample of 87 firms with employee stock ownership plans, 54 said that the pri-
Question:
Of a random sample of 87 firms with employee stock ownership plans, 54 said that the pri- mary motivation for setting up such a plan was tax-related."
(a) Find a 90% confidence interval for the population proportion of all such firms with this primary motivation.
(b) Without doing the calculations, state whether a 95% confidence interval for the popu lation proportion would be wider than, narrower than, or the same as the interval found in (a).
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