Unilever on households using palmolive soap

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1. The results of a survey conducted by Unilever on Households using Palmolive soap this year are distributed as follows:

Soap Brand Number of Household samples

palmolive 1200
brisk 1600
lux 1900
lifebuoy 1250
camay 1500
medicare 2100
brisk 1000
giv 750
other brands 3300

Test with alpha of 2%, whether the proportion of Households using Palmolive soap this year has changed significantly from last year which amounted to 10%.

Reference no: EM132514768

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