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A toy company produces toys with an average of 120 toys per week. Assume production of toys as a random variable, having standard deviation = 20. What will be the maximum hope that this week production will be at least 140 toys?
  • a)
    75%
  • b)
    34%
  • c)
    54%
  • d)
    10%
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A toy company produces toys with an average of 120 toys per week. Ass...
Here, μ=120 hours, σ=20 hours
For x=140,
z=(x-μ)/σ = (140-120)/20=1
Then, P(x>120)=P(z>1)=0.3413 ≈ 34%
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A toy company produces toys with an average of 120 toys per week. Assume production of toys as a random variable, having standard deviation = 20. What will be the maximum hope that this week production will be at least 140 toys?a)75%b)34%c)54%d)10%Correct answer is option 'B'. Can you explain this answer?
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