MATH 152 Statistics Fall 2018 olga monique njecacal kissim &I 9/11/18 8:22 PM Qu

Question

MATH 152 Statistics Fall 2018 olga monique njecacal kissim &I 9/11/18 8:22 PM Quiz: Chapter 2 Review Quiz Time Remaining:00 39:14 Submit Quiz This Question: 1 pt 8 of 16 This Quiz: 16 pts possible n tested the cholesterol levels of several young patients. The following relative-frequency histogram shows the readings for some patients who had high cholesterol levels 204,inclusive? b. What percentage of patients have levels of 215 or higher? 0.1 c. If the number of patients is 20, how many have levels between 210 and 214 195 205 215 225 patients Use the graph to answer the following questions Note that cholesterol levels are always expressed as whole numbers 18 Next

Explanation / Answer

a)

for 200 to 204 relative frequency is 0.1

therefore % of patients =10%

b)

percntage of patients have levels of 215 or higher =15%+15% =30%

c)

% between 210 and 214 =35%

therfore number of patients =np =20*0.35 =7

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