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10 questions from this quiz
np≥5np \geq 5np≥5 and n(1−p)≥5n(1-p) \geq 5n(1−p)≥5
To ensure Binomial is 'bell-shaped'
μ=np\mu = npμ=np
σ=np(1−p)\sigma = \sqrt{np(1-p)}σ=np(1−p)
Normal is continuous, Binomial is discrete
0.50.50.5
P(64.5<X<75.5)P(64.5 < X < 75.5)P(64.5<X<75.5)
1.201.201.20
Yes, np=70np=70np=70 and n(1−p)=30n(1-p)=30n(1−p)=30, both >5>5>5
0.76980.76980.7698
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