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Confidence interval for the true proportion of almonds

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Reference no: EM132464966

1) In a sample of 100 Planter's Mixed Nuts, 19 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.)

The 90% confidence interval is from ?  to  ?.

(b) What sample size would be needed for 90 percent confidence and an error of ±0.03?

Sample size ?

Reference no: EM132464966

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