statistics

7. The following statements are true for a binomial distribution except:
(a) Binomial is a continuous probability distribution.
(b) There are n number of trials.
(c) There are two possible outcomes for each trial: Success (S) and Failure (F).
(d) The trials are independent of each other.
(e) The probability of success remains constant.

8. A salesperson for a company visits 6 accounts every day. From the past experience it is
known that the probability of selling an account is 35%. The probability that on a given
day the salesperson will sell at least one account is:
(a) 0.0743
(b) 0.9246
(c) 0.8319
(d) 0.3562
(e) 0.9087
9. A salesperson for a company visits 5 accounts every day. From the past experience it is
known that the probability of selling an account is 40%. The probability that on a given
day the salesperson will sell less at most two accounts is:
(a) 0.3602
(b) 0.5543
(c) 0.6826
(d) 0.5443
(e) 0.5282

10. Suppose that 3% of all packages mailed through ‘We Deliver Next Day’ delivery service do
not make to their destination the next day. The probability that exactly two packages do
not make to their destination in a sample of 10 selected packages is
(a) 0.0306
(b) 0.0015
(c) 0.0042
(d) 0.0153
(e) 0.0317

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