treaustin6978
26.06.2019 •
Mathematics
Me tim has developed a money saving strategy that use the formula s=450+100r give a possible interpretation of tim’s strategy
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Ответ:
Ответ:
Step-by-step explanation:
The formula for normal distribution is expressed as
z = (x - u)/s
Where
u = mean
s = standard deviation
From the information given,
u = 266
s = 12
x = 242
We want to determine P(x ≥ 242). This is the probability of x greater than or equal to 242
P(x ≥ 242) = 1 - P(x </=242)
For x = 242,
z = (242 - 266)/12 = -24/12 = -2
Looking at the normal distribution table, the corresponding z score for P(x </= - 2) is 0.02275
P(x ≥ 242) = 1 - 0.02275 = 0.97725