Answer:
the ski original price is 641
Step-by-step explanation:
Answer:
μ−2σ = 1,089.26
μ+2σ = 1,097.62
Step-by-step explanation:
The standard deviation of a sample of size 'n' and proportion 'p' is:

If n=1139 and p =0.96, the standard deviation is:

The minimum and maximum usual values are:


10000:100*11=1100 income per year
21000-10000=11000 need to have income
11000:1100=10 years will pass time
As an integer and a raitonal number as well as a real number.