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Window Help Students | University of New England in Maine, Tangier a Course Home e, Tangier and O katie MAT 120 Statistics EH Spring 2018 Course Home MAT 120 Statistics EH Spring 2018 Homework: Section 7.1 Homework Save Score: 0.25 of 1 pt 13 of 25 (21 complete) Hw Score: 81 %, 20.25 of 25 pts 7.1.22-T Question Help * in a survey of 3154 adults aged S7 through 85 years, t was land that 876% of them used at least one prescription eedoen Complete parts (a) through (c) below a. How many of the 3154 subjects used at least one prescription medication? 2763 (Round to the nearest integer as needed.) a S0% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one o one decimal place as needed.) 晱 삐 :/自 «. (E.») More edit fhelds and t
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Answer #1

a) number who used at least one =np=3154*0.876=2763

b)

sample size sample proportion p 0.8760 std error Se 0.0060 for 90 % CI value of z margin of error E-zstd error lower confide

from above 90% CI : 86.6% < p <88.6%

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