3. Assume a student from North Carolina A&T claims that the average time some horticultural products from North Carolina A&T State University Farm takes before they expire is reported to be 11 hours and that the standard deviation for one of the products is 30 minutes. A random sample of 50 of the same product had an average fresh life of 10.7 hours. Use the 90% confidence interval to test the student's claim.

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