7.15 A one-sample test.
The one-sample statistic for testing
from a sample of observations has the value .
7.15
(a) . (b) 2.131 and 2.249. (c) 0.025 and 0.02. (d) 0.02 < P-value < 0.025. (e) It is significant at the 5% level; it is not significant at the 1% level. (f) 0.0207.