Probability of selecting more than x of a color given distribution?












1












$begingroup$


If you have 2000 candies distributed uniformly over 5 colors, what is the probability of getting more than 300 blue candies?



I was thinking of doing complementary counting, so



$$ 1-sum_{i=0}^{300} {2000choose{i}}left(frac 15right)^{i}left(frac45right)^{2000-i}$$



Would this be correct?










share|cite|improve this question











$endgroup$












  • $begingroup$
    What you've written is certainly correct, but I wonder if it's the answer your instructor is looking for. Have you been studying anything about approximating probabilities? The central limit theorem, for instance?
    $endgroup$
    – saulspatz
    Jan 13 at 16:20










  • $begingroup$
    @saulspatz Yes, I felt like this answer was correct but perhaps not what the question is going for. What would be a way to approximate this using CLT?
    $endgroup$
    – javafrapp90
    Jan 13 at 18:42










  • $begingroup$
    newonlinecourses.science.psu.edu/stat414/node/179
    $endgroup$
    – saulspatz
    Jan 13 at 22:12
















1












$begingroup$


If you have 2000 candies distributed uniformly over 5 colors, what is the probability of getting more than 300 blue candies?



I was thinking of doing complementary counting, so



$$ 1-sum_{i=0}^{300} {2000choose{i}}left(frac 15right)^{i}left(frac45right)^{2000-i}$$



Would this be correct?










share|cite|improve this question











$endgroup$












  • $begingroup$
    What you've written is certainly correct, but I wonder if it's the answer your instructor is looking for. Have you been studying anything about approximating probabilities? The central limit theorem, for instance?
    $endgroup$
    – saulspatz
    Jan 13 at 16:20










  • $begingroup$
    @saulspatz Yes, I felt like this answer was correct but perhaps not what the question is going for. What would be a way to approximate this using CLT?
    $endgroup$
    – javafrapp90
    Jan 13 at 18:42










  • $begingroup$
    newonlinecourses.science.psu.edu/stat414/node/179
    $endgroup$
    – saulspatz
    Jan 13 at 22:12














1












1








1





$begingroup$


If you have 2000 candies distributed uniformly over 5 colors, what is the probability of getting more than 300 blue candies?



I was thinking of doing complementary counting, so



$$ 1-sum_{i=0}^{300} {2000choose{i}}left(frac 15right)^{i}left(frac45right)^{2000-i}$$



Would this be correct?










share|cite|improve this question











$endgroup$




If you have 2000 candies distributed uniformly over 5 colors, what is the probability of getting more than 300 blue candies?



I was thinking of doing complementary counting, so



$$ 1-sum_{i=0}^{300} {2000choose{i}}left(frac 15right)^{i}left(frac45right)^{2000-i}$$



Would this be correct?







probability binomial-distribution






share|cite|improve this question















share|cite|improve this question













share|cite|improve this question




share|cite|improve this question








edited Jan 13 at 16:16









saulspatz

15.1k31331




15.1k31331










asked Jan 13 at 16:06









javafrapp90javafrapp90

61




61












  • $begingroup$
    What you've written is certainly correct, but I wonder if it's the answer your instructor is looking for. Have you been studying anything about approximating probabilities? The central limit theorem, for instance?
    $endgroup$
    – saulspatz
    Jan 13 at 16:20










  • $begingroup$
    @saulspatz Yes, I felt like this answer was correct but perhaps not what the question is going for. What would be a way to approximate this using CLT?
    $endgroup$
    – javafrapp90
    Jan 13 at 18:42










  • $begingroup$
    newonlinecourses.science.psu.edu/stat414/node/179
    $endgroup$
    – saulspatz
    Jan 13 at 22:12


















  • $begingroup$
    What you've written is certainly correct, but I wonder if it's the answer your instructor is looking for. Have you been studying anything about approximating probabilities? The central limit theorem, for instance?
    $endgroup$
    – saulspatz
    Jan 13 at 16:20










  • $begingroup$
    @saulspatz Yes, I felt like this answer was correct but perhaps not what the question is going for. What would be a way to approximate this using CLT?
    $endgroup$
    – javafrapp90
    Jan 13 at 18:42










  • $begingroup$
    newonlinecourses.science.psu.edu/stat414/node/179
    $endgroup$
    – saulspatz
    Jan 13 at 22:12
















$begingroup$
What you've written is certainly correct, but I wonder if it's the answer your instructor is looking for. Have you been studying anything about approximating probabilities? The central limit theorem, for instance?
$endgroup$
– saulspatz
Jan 13 at 16:20




$begingroup$
What you've written is certainly correct, but I wonder if it's the answer your instructor is looking for. Have you been studying anything about approximating probabilities? The central limit theorem, for instance?
$endgroup$
– saulspatz
Jan 13 at 16:20












$begingroup$
@saulspatz Yes, I felt like this answer was correct but perhaps not what the question is going for. What would be a way to approximate this using CLT?
$endgroup$
– javafrapp90
Jan 13 at 18:42




$begingroup$
@saulspatz Yes, I felt like this answer was correct but perhaps not what the question is going for. What would be a way to approximate this using CLT?
$endgroup$
– javafrapp90
Jan 13 at 18:42












$begingroup$
newonlinecourses.science.psu.edu/stat414/node/179
$endgroup$
– saulspatz
Jan 13 at 22:12




$begingroup$
newonlinecourses.science.psu.edu/stat414/node/179
$endgroup$
– saulspatz
Jan 13 at 22:12










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