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1. A sample of 30 Valencia oranges showed a mean weight of 5.5 ounces with a...

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1. A sample of 30 Valencia oranges showed a mean weight of 5.5ounces with a standard deviation of 0.5 ounces. What is the marginof error at 95% confidence?

2. A sample of 30 Valencia oranges showed a mean weight of 5.5ounces with a standard deviation of 0.5 ounces. What is the 95%confidence interval?

3. A sample of 30 Valencia oranges showed a mean weight of 5.5ounces with a standard deviation of 0.5 ounces. Do Valencia orangesweigh less than 5.6 ounces? Select the correct formulation:

Answer & Explanation Solved by verified expert
4.3 Ratings (746 Votes)
1 n 30Sample mean Sample standard deviation s 05Confidence level c 095Here population standard deviation is not known so we use    See Answer
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