Question: Over the past 8 weeks, a vet took the following glucose readings from this horse (in mg/100ml)

93 88 82 105 99 110 84 89

The sampling mean x= 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 o= 12.5. The mean glucose level for horses should be u= 85mg/100ml. Do these data indicate that Gentle Ben has an overall glucose level higher than 85? Use sigma=0.05.