**Question: ** Here is Minitab output on a study of nitrate ion concentration (in micrograms per liter) in a specimen of water.

T Test/Mean:

Test of mu=0.492 vs mu not=0.492

Variable-Concent

N-10

Mean-0.50410

StDev-0.01600

SEMean-0.00506

T-2.39

P-0.04

T Confidence Intervals

Variable-Concent

N-10

Mean-0.50410

StDev-0.01600

SEMean-0.00506

95CI-(0.49265, 0.51555)

a) What conclusion can be drawn fro the t-test?

b) What conclusion can you draw from the CI? Does it support or contradict the T-Test?

**Solution:**The solution consists of 190 words (2 pages)

**Deliverables:**Word Document