Answer:
a. 16%
Step-by-step explanation:
The difference from the mean is ...
(x - µ) = 4420 lb -3550 lb = 870 lb
Then the minimum Z-score of the traffic of interest is ...
(x - µ)/σ = (870 lb)/(870 lb) = 1
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The "empirical rule" tells you that 68% of a normal distribution is within 1 σ (Z = ±1) of the mean. If 68% is inside that range, then the remaining 32% is outside that range. The normal distribution is symmetrical about the mean, so half that quantity is below Z = -1, and the other half, 16%, is above Z=1.
About 16% of the cars have weights more than 4420 pounds.
C=9 np if u need anymore I gotchu
Answer:
Step-by-step explanation:
Start by converting 8 feet to inches. Note that 1 feet = 12 inches.
We can set up a unit converter:
The feet cancel out leaving us with:
The scale factor is:
Answer:
A. 22
Step-by-step explanation:
Let's use variables to represent the unknowns.
Let x = blue bowl
Let y = orange symbol
Let z = yellow brush
x * x * x = 512
x^3 = 512
x = sqrt^3(512) = 8
xy^2 = 72
8 * y^2 = 72
y^2 = 9
y = 3
yz = 33
z = 11
x + y + z = 8 + 3 + 11 = 22