Answer:
Yes, because 29.5 lies within the interval.
Explanation:
Since the given interval of (28, 32) inches has an 80% confidence level. It is plausible to estimate with 80% certainty that the mean height of all adult miniature horses falls within that interval.
A height of 29.5 belongs to the interval:
28≤ 29.5 ≤ 32
Therefore, based on the confidence interval, the belief that the population average height is 29.5 inches is plausible