A Level Maths Binomial Distribution Q. Watch

OneOfTheBillions
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Can someone please help me on this question?:

The random variable X ~ B(50, 0.40). Find:
a) the largest value of k such that P(X ≤ k) < 0.05,
b) the smallest number r such that P(X > r ) < 0.01

Thank you.
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len11
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Hey contact me over my email
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esrever
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(Original post by OneOfTheBillions)
Can someone please help me on this question?:

The random variable X ~ B(50, 0.40). Find:
a) the largest value of k such that P(X ≤ k) < 0.05,
b) the smallest number r such that P(X > r ) < 0.01

Thank you.
Use normal approximation
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begbie68
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(Original post by esrever)
Use normal approximation
mo need. and this would cause most students more of a problem dealing with the continuity correction issue.
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esrever
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(Original post by begbie68)
mo need. and this would cause most students more of a problem dealing with the continuity correction issue.
Okay then trial and error maybe
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begbie68
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Use the calc binomial distribution function, or the tables.
No need for trial and error (better would be trial and improvement!)
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