mahmudabiazp3ekot
21.08.2019 •
Mathematics
Write an expression that is equal to 3 times 2 and 1 /4
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Ответ:
The probability that the mean weight will be between 9.6 and 15.6 lb is 0.6731
Step-by-step explanation:
Here we have
P(9.6≤
≤15.6)
Therefore, we have
Where:
μ = Population mean = 12
σ = Population standard deviation = 6
n = Sample size = 4
When
= 9.6 we have
From Z table, that is 0.21186
When
= 15.6 we have 1.2
From Z table, that is 0.88493
0.88493 - 0.21186 = 0.67307
P(9.6≤
≤15.6) = 0.67307 which is 0.6731 to four decimal places.