Question: 32. A past study indicates that the standard deviation of hourly wages of workers in an auto industry is $4.00. A random sample of hourly

32. A past study indicates that the standard deviation of hourly wages of workers in an auto industry is $4.00. A random sample of hourly wages of 49 workers yields an average of $55.00. Find

(a) a point estimate of population mean wage,

(b) the standard error of the point estimator calculated in part (a),

(c) the margin of error of the estimate at the 95% confidence level.

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