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Gentle Ben is a Morgan horse at a Colorado dude ranch. Over the past 8 weeks,...

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Basic Math

Gentle Ben is a Morgan horse at a Colorado dude ranch. Over thepast 8 weeks, a veterinarian took the following glucose readingsfrom this horse (in mg/100 ml).

959083107971128391

The sample mean is x ≈ 94.8. Let x be a randomvariable representing glucose readings taken from Gentle Ben. Wemay assume that x has a normal distribution, and we knowfrom past experience that σ = 12.5. The mean glucose levelfor horses should be μ = 85 mg/100 ml.† Do these dataindicate that Gentle Ben has an overall average glucose levelhigher than 85? Use α = 0.05.

(a) What is the level of significance?

Compute the z value of the sample test statistic.(Round your answer to two decimal places.)


(c) Find (or estimate) the P-value. (Round your answer tofour decimal places.)

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