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:
180 degree
Step-by-step explanation:
A straight line is 180 degrees, or a "straight" angle.
Answer:
19/30
Step-by-step explanation:
add all of them together then subtract the red and green
10+6+9+5= 30
red and green= 5+6=11
30-11=19
19/30
Answer:
Any number that is divisible by 3 is also divisible by 6. Find a counterexample to show that the conjecture is false. 24 18 12 21.
Step-by-step explanation:
brainlies plssssssss!
Answer:
I'm sorry, I can help only with this one x = 20°
Step-by-step explanation:
2x + 5° + 4x + 15° + 2x = 180°
8x = 180° - 5° - 15°
8x = 160°|÷8
x = 20°
