dom Variables and Probability Distributions ed Assignment | Read Chapter 6 | Bac
ID: 3047010 • Letter: D
Question
dom Variables and Probability Distributions ed Assignment | Read Chapter 6 | Back to Assignment Due Monday 02.19.18 at 11:45 P Keep the Highest: /4 ttempts: 18. Chapter 6, Section 6.7, Exercise Set 1, Problem 6.76 Twenty-five percent of the customers of a grocery store use an express checkout. Consider five randomly selected Aa Aa customers, and let x denote the number among the five who use the express checkout. What is p(2), that is, P(x = 2), to four decimal places? What is P(x s 1), to four decimal places? What is P(2 s x), to four decimal places? (Hint: Make use of your computation in above part.) What is P(x 2), to four decimal places?Explanation / Answer
Solution:-
p = 0.25, n = 5
a) P(x = 2) = 0.2637
x = 2
By applying binomial distribution
P(x,n) = nCx*px*(1-p)(n-x)
P(x = 2) = 0.2637
b) P(x < 1) = 0.6328
x = 1
By applying binomial distribution
P(x,n) = nCx*px*(1-p)(n-x)
P(x < 1) = 0.6328
c)
P(x > 2) = 0.3672
x = 2
By applying binomial distribution
P(x,n) = nCx*px*(1-p)(n-x)
P(x > 2) = 1 - P(x < 1)
P(x > 2) = 1 - 0.6328
P(x > 2) = 0.3672
d) P(x 2) = 0.7363
P(x 2) = 1 - P(x = 2)
P(x 2) = 1 - 0.2637
P(x 2) = 0.7363
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.