Mathematics, 25.05.2021 22:10 precioushayhay
A survey research center conducts frequent opinion polls, using large samples drawn by probability methods which are practically free from bias. Each of the last 100 polls was carried to estimate a percentage. All the standard errors were computed by the appropriate technique, and turned out to be very close to 3 percentage points. About how many of the estimates were off by more than 3 percentage points
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