Refer to the Chemical Engineering Research and Design (March 2013) study of a method of purifying nuclear fuel waste, Exercise 6.35. Recall that the process involves oxidation in molten salt and tends to produce oxygen bubbles with a rising velocity. To monitor the process, the researchers collected data on bubble velocity (measured in meters per second) for a random sample of 25 photographic bubble images. These data (simulated) are reproduced in the accompanying table. When oxygen is inserted into the molten salt at a rate (called the sparging rate) of 3.33 × 10-6, the researchers discovered that the true mean bubble rising velocity is μ = .338.

a. Conduct a test of hypothesis to determine if the true mean bubble rising velocity for the population from which the sample is selected is μ = .338. Use α = .10.

b. Based on the test results, part a, do you believe that the data in the table were generated at the sparging rate of 3.33 × 10-6? Explain.

Transcribed Image Text:

0.275 0.261 0.209 0.266 0.265 0.312 0.285 0.317 0.229 0.251 0.256 0.339 0.213 0.178 0.217 0.307 0.264 0.319 0.298 0.169 0.342 0.270 0.262 0.228 0.220