The viscosity of a liquid detergent is supposed to average 800 centistokes at 25C. A random sample
Question:
The viscosity of a liquid detergent is supposed to average 800 centistokes at 25°C. A random sample of 16 batches of detergent is collected, and the average viscosity is 812. Suppose we know that the standard deviation of viscosity is α = 25 centistokes.
(a) State the hypotheses that should be tested.
(b) Test these hypotheses using α = 0.05. What are your conclusions?
(c) What is the P-value for the test?
(d) Find a 95 percent confidence interval on the mean.
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a The hypotheses that should be tested in this experiment are Null hypothesis H0 The mean viscosity ...View the full answer
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