Daily Spot Exchange Rate, U. S. Dollars per Pound Sterling Date Rate Date Rate Date Rate
1-Apr-04 1.8584 13-Apr-04 1.8260 23-Apr-04 1.7874
2-Apr-04 1.8363 14-Apr-04 1.7752 26-Apr-04 1.7857
5-Apr-04 1.8140 15-Apr-04 1.7785 27-Apr-04 1.7925
6-Apr-04 1.8474 16-Apr-04 1.8104 28-Apr-04 1.7720
7-Apr-04 1.8410 19-Apr-04 1.8155 29-Apr-04 1.7656
8-Apr-04 1.8525 20-Apr-04 1.7816 30-Apr-04 1.7744
9-Apr-04 1.8422 21-Apr-04 1.7620 3-May-04 1.7720
12-Apr-04 1.8558 22-Apr-04 1.7784 4-May-04 1.7507
5-May-04 1.7732 13-May-04 1.7554 21-May-04 1.7880
6-May-04 1.7641 14-May-04 1.7692 24-May-04 1.7808
7-May-04 1.7942 17-May-04 1.7595 25-May-04 1.8535
10-May-04 1.7693 18-May-04 1.7695 26-May-04 1.8342
11-May-04 1.7644 19-May-04 1.7727 27-May-04 1.8869
12-May-04 1.7743 20-May-04 1.7610 28-May-04 1.8730
Click here for the Excel Data File (b) Perform simple exponential smoothing (using Excel’s Data Analysis or other software such as Minitab) using α = .05, .10, .20, and .50.

step-by-step explanation:

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step-by-step explanation:

too hard the other guy did it

step-by-step explanation:

step-by-step explanation:

part a. the differences are decreasing, so we know the sequence is not arithmetic. the ratios are constant (=3/4), so we know the sequence is geometric.

part b. from part a, we know the common ratio is 3/4, so each term is 3/4 of the one before. the initial term is the number of gallons at h=1.

g[h] = (3/4)·g[h-1]

g[1] = 384 . . . . initial value required for a recursive definition

part c. the general formula for a geometric sequence is

a[n] = a[1]·r^(n-1)

we have a[1] = 384, r = 3/4, and the term number given by h. the formula that follows is

g[h] = 384·(3/4)^(h-1)

part d. filling in the value and doing the arithmetic, we have

g[12] = 384·(3/4)^11 ≈ 384·0.042235136 ≈ 16.2183 . . gallons

part e. each gallon is 4 quarts, so

16.2183 gal × 4 qt/gal = 64.8732 qt