Question

In USA Today (Sept. 5, 1996) the results of a survey
involving the use of sleepwear while traveling were listed
as follows:
Male Female
Underwear 0.220 0.024 0.244
Nightgown 0.002 0.180 0.182
Nothing 0.160 0.018 0.178
Pajamas 0.102 0.073 0.175
T-shirt 0.046 0.088 0.134
Other 0.084 0.003 0.087
(a) What is the probability that a traveler is a female
who sleeps in the nude?
(b) What is the probability that a traveler is male?
(c) Assuming the traveler is male, what is the probability
that he sleeps in pajamas?
(d) What is the probability that a traveler

Answer 1

you have a male and a female category, but you have 3 number categories. Is there something besides male and female such as both ?

Answer 2

the third one is TOTAL.
plzz help

Answer 3

(a) female, nude is 0.18/0.178 reduces to .09/.089
(b) I am not sure about this one...I know you put the total number of males over the total number of people. I am thinking you add the males that sleep in underwear, nightgowns,nothing,pajamas etc. and you put that over the "totals" category added together.
(c) male,pajamas is 0.102/0.175
(d) question is not finished.

Answer 4

sorry about that
(d) What is the probability that a traveler is male if he sleeps in pajamas or a t-shirt

Answer 5

(d) 0.102/0.175 * 0.046/0.134 = .004692/.02345 (I think)
You might want to get a second opinion on these.....they are not my best subject.

Answer 6

OR indicates addition.NO?

Answer 7

sorry...I am not sure....you might want to tag someone who might know this stuff better then me.