Assume that these are a random sample of water specimens from a normal population.
The article “Ozone for Removal of Acute Toxicity from Logyard Run-off” presents chemical analyses of runoff water from sawmills in British Columbia. Included were measurements of pH for six water specimens: 5.9, 5.0, 6.5, 5.6, 5.9, 6.5.
a. Find a 98% prediction interval for a pH of a single specimen.
b. Find a tolerance interval for the pH that includes 95% of the specimens with 95% confidence.
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a. scanner c. computer b. printer d. digital camera
6.73 + 9.552 - (7.2 ) - (-0.321 ) =
A) -8.761 B) 23.803 C) 8.761 D) 9.403