3 years ago

Weights of cars passing over Bridge part 3

Mathematics

1 answer:

marin [14]3 years ago

8 0

Answer:

d. 30.42%

Step-by-step explanation:

A suitable calculator pegs the probability of exceeding 0.51724 standard deviations above the mean as about 0.3025 = 30.25%. The closest answer is choice D.

Z = (X -μ)/σ = (4000 -3550)/870 = 450/870 ≈ 0.51724

_____

<em>Comment on the answer choices</em>

30.42% is the probability of exceeding 3995 pounds, not 4000.

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Weights of cars passing over Bridge part 3​

Weights of cars passing over Bridge part 3