Question

nment Hesponses/submit/dep23587446&tags autosave question3594475,15 11. [O/10 Points] DETAILS PREVIOUS ANSWERS ILLOWSKYINTROSTAT1 4.HW.100. MY NOTES ASK YOUR TEACHER It has been estimated that only about 30% of California residents have adequate earthquake supplies. Suppose you randomly survey 13 California residents. We are interested in the number who have adequate earthquake supplies В Part (а) In word dan memandom X Otheranber of California ressured in the each year O the number of California residents who have deque earthquake supplies Otheraber of California residents O the number of cars that allomach year В Part Last the valuesXmayo X-0.12.13 OX=1,2,3 30 X-0.1.2 OX0.1.2.3.4 Gweledi boxercumbers as infogers, tractions, or decimals) e Part 4 What is the probably that at least one de carthquake supplies found your answer to four decal places) Type here to search O

Answer 1

a)In words, define the random variable X -

The no. Of California residents who have adequate earthquake supplies.(second option)

b)X may take values-

X=0,1,2,3,....,13.(first option)

c) distribution of X is Binomial with parameters 13 and 0.3 i.e. X~binomial(13,0.3)

d)

d) Probability that at least seven have adequate earthquake subblies = P(x >7] = 1-P[x<7] Pl-PCX-01+ P[x=17+[X-2] +P[x=33+ PTX-47+[x = 5 +P[x26]] 1-3) (0-3) (6-7) + (63)10 351071 + + -1-0-0097 +0.0540+ 0-1388+0-218170-2337 +0-1802 +0-20601 - [0.0097+0.0540+0-1388+0-2181+0+2237 +0.1802+0.10301 21-0.9375 20.0625 CS Scanned with CamScanner