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Interval estimate of population standard deviation

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Reference no: EM131050422

1.A sample of 57 observations will be taken from a process (an infinite population). The population proportion equals 0.15. The probability that the sample proportion will be less than 0.17 is (Round your answer to 4 decimal places.)

2. A random sample of 51 charge sales showed a sample standard deviation of $47. A 90% confidence interval estimate of the population standard deviation is (Round your answers to 2 decimal places.)

Reference no: EM131050422

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