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In a sample of 120 Planter's Mixed Nuts, 18 were found to be almonds. (a) Construct a 90 percent confidence interval for the true proportion
In a sample of 120 Planter's Mixed Nuts, 18 were found to be almonds.
(a) Construct a 90 percent confidence interval for the true proportion of almonds. (Use a z-value taken to three decimal places in your calculations. Round your answers to 3 decimal places.)
(b) May normality be assumed?
(c) What sample size would be needed for 90 percent confidence and an error of 0.02?
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