You are doing a survey of the average amount (in $) spent by students in purchasing textbooks per semester. Suppose, you had no information on the standard deviation of the amount spent. However, you do know that the range in the amount spent is about $240. You have set a 95% level of confidence and do not want to be wrong by more than $5 in your estimate. What is the most appropriate sample size

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐

x -

median = 1.25

range = 12-14.5

interquartile = q12-q14.5

y -

median = 1

range = 15-17

interquartile = q15-q17

the workers who do no drive has no reasonable reason to buy gasoline due to they don't have anything to use it for

the answer is 13 cm