SOLUTION: Can you please help me solve this problem. Thank you! Approximately 73% of all marketing personnel are extroverts, whereas about 69% of all computer programmers are introverts.

Question 457880: Can you please help me solve this problem. Thank you!
Approximately 73% of all marketing personnel are extroverts, whereas about 69% of all computer programmers are introverts.
(a) At a meeting of 15 marketing personnel, what is the probability that 10 or more are extroverts? (Use 3 decimal places.)
What is the probability that 5 or more are extroverts? (Use 3 decimal places.)
What is the probability that all extroverts? (Use 3 decimal places.)
(b) In a group of 5 computer programmers, what is the probability that none are introverts? (Use 3 decimal places.)
What is the probability that 3 or more are introverts? (Use 3 decimal places.)
What is the probability that all are introverts? (Use 3 decimal places.)
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Approximately 73% of all marketing personnel are extroverts,
about 69% of all computer programmers are introverts.
------------------------
(a) At a meeting of 15 marketing personnel, what is the probability that 10 or more are extroverts? (Use 3 decimal places.)
Ans: 1- binomcdf(15,0.73,9) = 0.804
========================================
What is the probability that 5 or more are extroverts? (Use 3 decimal places.)
Ans: 1- binomcdf(15,0.73,4) = 0.999
-----------------------------------------
What is the probability that all extroverts? (Use 3 decimal places.)
Ans: (0.73)^15 = 0.009
---------------------------
(b) In a group of 5 computer programmers, what is the probability that none are introverts? (Use 3 decimal places.)
Ans: 0.31^3 = 0.030
---------------------------
What is the probability that 3 or more are introverts? (Use 3 decimal places.)
Ans: 1- binomcdf(5,0.69,2) = 0.823
--------------------------------
What is the probability that all are introverts? (Use 3 decimal places.)
Ans: 0.69^5 = 0.156
=============================
Cheers,
Stan H.

RELATED QUESTIONS
Suppose approximately 80% of all marketing personnel are extroverts, whereas about 55% of (answered by solver91311)

Approximately 79% of all marketing personnel are extroverts, whereas about 64% of all... (answered by jrfrunner,edjones)

Can you help me solve this problem.... (answered by solver91311)

Can you please help me out with this and help me solve this please? I am not sure how and (answered by htmentor)

(1-3/4) (1+3/4) can you please help me solve this problem. thank... (answered by jim_thompson5910)

Can you please help me solve this problem? what are all equivalent expressions to... (answered by Alan3354)

Please help me with this problem: find all values of x that are not in the domain of g.... (answered by Fombitz)

Please help me. I've tried to solve this problem and im completely lost. The problem is... (answered by ewatrrr)

Can someone please help me solve this problem: Y(2)=x-3 Thank... (answered by Alan3354)