Question

a deficiency of the trace element selenium in the diet can negatively impact growth, immunity, muscle and neuromuscular, function, and fertility. The introduction of selenium supplements to diary cows is justified when pastures have low selenium levels. The following data on the initial milk selenium concentration (mg/L) for a sample of cows given a selenium supplement (treatment group) is given below:

Initial Measurement

Treatment

11.4

9.6

10.1

8.5

10.3

10.6

11.8

9.8

10.9

10.3

10.2

11.4

9.2

10.6

10.8

8.2

Carry out a complete hypothesis testing to determine if initial mean selenium concentration is different from 11 mg/L. Use significance level of alpha= 0.05.

What is the hypothesis, test statistic, p value, and confidence interval?

Answer 1