Sampling and Sampling Distributions

Members of the Organization for Consumer Action send more than 250 volunteers a day all over the state to increase support for a consumer protection bill that is currently before the state legislature.

Jill Johnson, product manager for Southern Electric's smoke alarm, is concerned over recent complaints from consumer groups about the short life of the device.

Seventy data clerks at the Department of Motor Vehicles make an average of 18 errors per day, normally distributed with a standard deviation of 4.

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