In a one story house at the corner of the road, the bedrooms were yellow, the kitchen was blue, the living room was orange, the
2 answers:
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Answer and Step-by-step explanation:
Round your final answers to 2 decimal places
μ = 420
σ = 24
a. Highest 20 percent
P (Z > a-420/24) = 0.20
For a highest 20%, according to the table attached, we have to find the z score for 0.30 (0.5 - 0.2)
P(0 < Z < 0.84) = 0.3
a-420/24 = 0.84
a-420 = 20.16
a = 20.16 + 420 = 440.16
weight 440.16
b. Middle 60 percent
P (0 < Z < b-420/24) = 0.3
b = 440.16
P (c-420/24 < Z < 0) = 0.3
c-420/24 = -0.84
c-420 = -20.16
c = 399.84
Weight from 399.84 to 440.16
c. Highest 80 percent
P (d-420/24 < Z < 0) = 0.3
d-420/24 = -0.84
d-420 = -20.16
d = 399.84
d. Lowest 15 percent
P(e-420/24 < Z < 0) = 0.35
e-420/24 = -1.04
e-420 = -29.76
e = 390.24
