Speeds for a sample of nine cars were measured by radar along a stretch of highway. The
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Speeds for a sample of nine cars were measured by radar along a stretch of highway. The results, in miles per hour, were as follows. Assume that the population of speeds is normally distributed.
Can you conclude that the population standard deviation is greater than 2? Use the α = 0.05 level of significance.
Transcribed Image Text:
56 60 60 53 55 54 51 54 =4 51 506
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