Gentle Ben is a Morgan horse at a Colorado dude ranch. Over the past 8 weeks, a
Question:
Gentle Ben is a Morgan horse at a Colorado dude ranch. Over the past 8 weeks, a veterinarian took the following glucose readings from this horse (in mg/100 ml).
95 | 86 | 84 | 105 | 97 | 108 | 86 | 87 |
The sample mean is x 93.5. 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 = 12.5. The mean glucose level for horses should be = 85 mg/100 ml. Do these data indicate that Gentle Ben has an overall average glucose level higher than 85? Use = 0.05.
State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test?
a) H0: = 85; H1: < 85; left-tailed
b) H0: = 85; H1: 85; two-tailed
c) H0: > 85; H1: = 85; right-tailed
d) H0: = 85; H1: > 85; right-tailed