Answer: The paint used to make lines on roads must reflect
Chapter 8, Problem 8.50(choose chapter or problem)
The paint used to make lines on roads must reflect enough light to be clearly visible at night. Let denote the true average reflectometer reading for a new type of paint under consideration. A test of H0: 20 versus Ha: 20 will be based on a random sample of size n from a normal population distribution. What conclusion is appropriate in each of the following situations? a. n 15, t 3.2, .05 b. n 9, t 1.8, .01 c. n 24, t .2 51
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