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a researcher claims that the average yearly consumption of soft drinks per person is greater than...

a researcher claims that the average yearly consumption of soft drinks per person is greater than 58 gallons. In a sample of 50 randomnky selected people, the mean of the yearly consumption was 62.3 gallons. The standard deviation of the population is 4.5 gallons. At 0.05, test the researchers claim.
what is the p value for this problem (by hand)?
Math   Statistics-And-Probability   
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