To calculate the upper and lower estimate for the number of Canadian adults that would agree that the penny should be taken out of circulation, we can use the percentage of participants in the survey who agreed (68%) and the margin of error (+-3.1%).
Upper Estimate:
Add the margin of error to the percentage who agreed: 68% + 3.1% = 71.1%
Multiply the total number of Canadian adults (28 million) by this percentage: 0.711 * 28,000,000 = 19,908,000
Lower estimate:
Subtract the margin of error from the percentage who agreed: 68% - 3.1% = 64.9%
Multiply the total number of Canadian adults (28 million) by this percentage: 0.649 * 28,000,000 = 18,172,000
So, the upper estimate is 19,908,000 and the lower estimate is 18,172,000.
There were approximately 28 million adults on Canada when a survey was conducted. In an online survey, 1008 Canadians took part. 68% said that the penny should be abolished. If the margin of error was +- 3.1%, give an upper and lower estimate for the number of Canadian adults that would agree that the penny should be taken out of circulation.
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