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Unformatted text preview: grams with 90 percent confidence? n = [z*sigma/E]^2 E = z*sigma/sqrt(n) z* for 90% confidence = 1.645 sigma = 0.13199 E = 0.03 n=[z'*s/E]^2 n=[1.645*0.131989/0.03]^2 = 7.237397^2 = 52.3799; n=53 (c) Discuss the factors which might cause variation in the weight of Tootsie Rolls during manufacture. (Data are from a project by MBA student Henry Scussel.) There are many random variables during the production. Temperature, consistency of batches, machine tolerances, and machine operators might cause variation in the weight of the Tootsie Roll....
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This note was uploaded on 06/25/2011 for the course RES 341 taught by Professor Hermis during the Spring '10 term at University of Phoenix.
- Spring '10