Question

Question 1 (2 points) 1. In the past, a chemical company produced 880 pounds of a certain type of plastic per day. Now, using a newly developed and less expensive process, the mean daily yield of plastic for the first 50 days of production is 871 pounds; the standard deviation is 21 pounds. Do the data provide sufficient evidence to indicate that the mean daily yield for the new process is less than that of the old procedure? (Use Q=0.05) (a) Alternative hypothesis for the problem above is Ou < 871 Ou < 880 OH > 880 Op> 871

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Answer 1

From the above information -880 X-871 r = 21 n=50 froos Hypotheses ir Hol M=880 to a Alternative hypotherer ir AILY80 6 Test statistic hos X-M = 871- 880 250 To = -3.03 tatte oort p - Varue=0.0024 reject. Ho. There is sufficient swedence that to the mean daily yeild for the new morem is less than the old procedure