Statistics homework help needed: Hypothesis test

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Question description

 Gentle Ben is a Morgan horse at a Colorado dude ranch.  Over the past 8 weeks, a veterinarian took glucose readind found a sample mean of  = 93.8. Let x be a random variable representing glucose readings taken from Gentle Ben.  We may assume that x has a normal distribution, and we know from past experience that σ = 12.5.  The mean glucose for horses should be µ = 85 mg/100ml.  Doe these data indicate that Gentle Ben has an overall average glucose level higher than 85.  Use a 0.05 level of significance.

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