Using the empirical rule for a normal distribution. the required interval is within plus and minus two standard deviations from the mean:
62.5 - 36 = 26.5.
62.5 + 36 = 98.5.
The interval is (26.5, 98.5).
Answer:
16 ft
Step-by-step explanation:
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: X-Axis
Begin at the origin and move along the x-axis. This is the x-coordinate and is written first in the ordered pair. Move from 5 up to the ordered pair and read the number on the y-axis.
Answer:
Area of ΔABC = 144 ft^2
Step-by-step explanation:
ΔABC is 45 45 90 right triangle
Ratio of leg (AC, BC) : hypo (AB) = x : x√2
Given hypo AB = 24 so AC = BC = 12√2
Area of ABC = 1/2 bh
= 1/2 ( 12√2)( 12√2)
= 1/2(144 * 2)
= 144 ft^2
