health risk quite stressal not stressed means that the t ver

health risk quite stressal \"not stressed\" means that the t very reported that most days ar ful, bo strouf.. en\" anked aseries of questins . Some of the multi arv hoen in thhe ollowing tale n\' a\' all-trental 6 106 Not strened 1.954 24 1,954 115 65 2480 1,954 2115 65 a) what thr prohahdity that someong in this ,t (a) What is the probability that someone in this stedy (b) Given thst someone thi·study is from the i What is the conditional prohahlity that someone in hs stady smokes given that the peson bas high ncome? () Compare your ers to parts (a) and (b) Is ic) Is being a smoker of having a high 13.2 Comiderhe te ed in Esee .. 334 Cer the data table reported in Exercise 33 low income either is stressed or has low income (for hoth) tremed and ha e income? not trom the los income grp (c) What is the peobability that somcone in this staly c) What is the probubility that someone in this What is te from the low income group o that wmeone in 33 The udowing duts tle ien from the dy the wife smoke. Is the smoking status (umoker of or why ot? endent of that of the I only need problem number 3.3.3 done. Thanks!

Solution

A) PROBABILITY THAT SOMEONE IS STRESSED

TOTAL PERSONS = 6549

TOTAL STRESSED = 1056

HENCE PROBABILITY = 1056/6549 = 0.161

B) P(STRESSED / HIGH) = P(HIGH INTERSECTION STRESSED)/ P(STRESSED) =

P(HIGH INTERSECTION STRESSED ) = 216/6549 = 0.032

HENCE THE ANSWER = 0.032/0.161 = 0.204 ( AS PROBABILITY OF STRESSED CALCULATED IN PART 1)

C) BEING STRESSED IS NOT INDEPENDED FROM HIGH INCOME AS THE TOTAL PROBABILITY OF BEING STRESSED IS LESS THEN THE PROBABILITY OF BEINGH STRESSED FROM THE HIGH INCOME HENCE THE HIGH INCOME HAS HIGH INFLUENCE IN THE STRESS AND NOT INDEPENDENT OF IT.