Take these water samples to be an SRS of the water in all swimming areas in Erie County. Let u represent the mean E counts for all possible 100-mL samples taken from all swimming areas in Erie County. We test Ho: µ = 400 versus Hoa :H< 400 because the researchers are interested in whether the average E. coli levels in thes areas are safe. ntotirtic (Fnter your answers rounded to three decimal places)

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Take these water samples to be an SRS of the water in all swimming areas in Erie County. Let u represent the mean E. coli
counts for all possible 100-mL samples taken from all swimming areas in Erie County. We test
Ho: H= 400 versus H. :µ< 400 because the researchers are interested in whether the average E. coli levels in these
areas are safe.
(a) Find x, s, and the t statistic. (Enter your answers rounded to three decimal places)
Find the P-value. (Enter your answer rounded to four decimal places.)
Publisher: W.H. Freeman
Question Source: Moore, The Basic Practice Of Statistics, Be
Transcribed Image Text:Take these water samples to be an SRS of the water in all swimming areas in Erie County. Let u represent the mean E. coli counts for all possible 100-mL samples taken from all swimming areas in Erie County. We test Ho: H= 400 versus H. :µ< 400 because the researchers are interested in whether the average E. coli levels in these areas are safe. (a) Find x, s, and the t statistic. (Enter your answers rounded to three decimal places) Find the P-value. (Enter your answer rounded to four decimal places.) Publisher: W.H. Freeman Question Source: Moore, The Basic Practice Of Statistics, Be
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