If you randomly purchase one item, the probability it will last longer than 9 years is; 11.12%
<h3>How to find the probability from z-score?</h3>
The formula for Z-score is;
z = (x' - µ)/σ
where;
x' = sample mean
µ = population mean
σ = standard deviation
Thus;
z = (9 - 7.9)/0.9
z = 1.22
From online p-value from z-score calculator, we have;
probability = 0.1112 = 11.12%
Read more about Z-score probability at; brainly.com/question/25638875
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Answer:
The answer is B
Step-by-step explanation:
The best way to solve is to plug in the x points into each equation to see if there is only one that works for the first point and if more than one works do the same for the second point
Answer: The correct option is 1.
Explanation:
The given piecewise function is,
It means if x<0, then
If 
, then
Since the f(x) is defined for x<0 and , therefore the function f(x) is not defined for 
.
From the graph 2, 3 and 4 we can easily noticed that for each value of x there exist a unique value of y, therefore the function is defined for all values of x, which is not true according to the given piecewise function.
Only in figure the value of y not exist when x lies between 0 to 2, including 0. It means the function is not defined for , hence the first option is correct.
1/12 chance
You have 4 counters and want a red (1/4) then a white, but don't replace any which gives you (1/3) *since you don't replace the other one...* Then you multiply the two (1/4*1/3) and you should get 1/12.
