Question: 11-2. This year’s water pollution readings at State Park Beach seem to
ID: 3157126 • Letter: Q
Question
Question:
11-2. This year’s water pollution readings at State Park Beach seem to be lower than last year. A sample of 30 readings was randomly selected from this year’s daily readings:
Researchers want to know if this is sufficient evidence to conclude that the mean of this year’s pollution readings is significantly lower than last year’s mean of 3.8. What are the hypothesis statements?
3.6 3.9 3.3 3.4 3.8 3.7 3.5 3.6 3.7 3.6 3.6 3.7 3.9 3.8 3.7 4.0 3.7 3.5 3.8 3.6 3.5 3.6 3.5 3.7 3.6 3.9 3.9 3.7 3.6 3.5Explanation / Answer
Answer is c.. H0: mu=3.8 vs H1: mu<3.8
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