econom Ist found trat a randn e of 42 high sonool teaches An Sample had an average annual Salary of $56,490. A previous Study Snowed that the population Standard deviation B 4150. Cal culate the off ecror, E, margin for a 99%o Confi clence interval for M, tre average annuai Salary of all high Scnool teachers.

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1n econo ist found trat a randan
Scmple of 42 high scnool teachers
had an average annual Salary of
$56,490.A previaus Study
Snowed that the population
Standard deviation $4150.
Cal culate the margin OH ecror, E
for a 99% Confi clence Interval
for M, the average a0ouai
of all hign Scnool
teachers.
Transcribed Image Text:1n econo ist found trat a randan Scmple of 42 high scnool teachers had an average annual Salary of $56,490.A previaus Study Snowed that the population Standard deviation $4150. Cal culate the margin OH ecror, E for a 99% Confi clence Interval for M, the average a0ouai of all hign Scnool teachers.
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