Given:
μ = 500 days, the population mean
σ = 60 days, the population standard deviation
Therefore
μ + σ = 560
μ - σ = 440
μ + 2σ = 620
μ - 2σ = 380
μ + 3σ = 680
μ - 3σ = 320
The figure shown below illustrates the normal distribution
About 68% of the total area lies in x = (μ-σ, μ+σ)
About 95% of the total area lies in x = (μ-2σ, μ+2σ)
About 99.7% of the total area lies in x = (μ-3σ, μ+3σ).
1/6:1/4
2/6:2/4
3/6:3/4
4/6:4/4
4/4= 1 hour.
Paige mows 4/6 of an acre in an hour
Answer:
(1 / 2) * 1 3/5 * 2 7/9 = 2.22222222
Step-by-step explanation: