Answer:
a) Range = 200
b) Standard Deviation = 75.03
Explanation:
Prices: $189 $219 $259 $329 $129
a) Range
Range = Maximum value - Minimum value
Maximum value = 329
Minimum value = 129
So, Range = 329 - 129
Range = 200
b) Standard Deviation
The formula used for finding standard deviation is:

N is No of terms
μ is mean
Mean μ = (189+219+259+329+129)/5 = 225
x x-μ (x-μ)^2
189 189-225= -36 1296
219 219 - 225= -6 36
259 259-225= 34 1156
329 329-225=104 10,816
129 129-225=-96 9216
Now, find



Now finding standard deviation


