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Create a sample “questionnaire” for your research. A publisher states that the books they print have...

Create a sample “questionnaire” for your research. A publisher states that the books they print have an average of 250 pages. The average number of pages of 33 books randomly selected is 242 and the standard deviation is 12. Can it be said with 95% confidence that the books are equal to 250 pages?

It is written on the products prepared for sale in a filling facility that 750 ml. 126 product taken randomly and determine their weights average of 742 ml and 13 ml of standard deviation. Can it be said that the products weights is more than 750 ml with 95% confidence?

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