1 Critical Value: Our sample has size of 30, and so there are 29 degrees of freedom. 2  The critical value for confidence level of 90% is given by t * = 1.699.3  Margin of Error: Now we use the margin of error formula and obtain a margin of error of t * s /â n = (1.699)(2) /â(30) = 0.620. Critical Value: Our sample has size of 30, and so there are 29 degrees of freedom. 2  The critical value for confidence level of 90% is given by t * = 1.699.
vasodilator as diltiazem. Minimum therapeutic plasma diltiazem concentrations appear to be in the range of 50 to 200 ng/mL. There is a departure from linearity when dose strengths are increased; the half-life is slightly increased with dose. A study that compared patients with
a diltiazem is a calcium channel blocker used to treat high blood pressure and angina diltiazem should be taken with a full glass of water either with or without food some reports indicate that grapefruit or grapefruit juice may interfere with the absorption of diltiazemiltiazem works by relaxing blood vessels and increasing the supply of blood and oxygen to the heart this type of medication is known as a calcium channel blocker diltiazem comes in a tablet extended release tablet extended release capsule and injectable form