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A statistician employed by a consumer testing organization reports that at 95% confidence he has determined...

A statistician employed by a consumer testing organization reports that at 95% confidence he has determined that the true average content of the Uncola soft drinks is between 11.7 to 12.3 ounces. He further reports that his sample revealed an average content of 12 ounces, but he forgot to report the size of the sample he had selected. Assuming the standard deviation of the population is 1.28, determine the size of the sample. #9b) About 28% of private companies are owned by women (Cincinnati Enquirer, January 26, 2006). Answer the following questions based on a sample of 240 private companies. #9bi). Show the sampling distribution of (), the sample proportion of companies that are owned by women. #9bii). What is the probability the sample proportion will be within ±.04 of the population proportion?

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orchestra answered 2 years ago
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