Statistics 7.5 - 7-5 Testing a Claim about a Mean: Not...

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7-5 Testing a Claim about a Mean: σ Not Known Assumptions 1. The sample is a simple random sample. 2. The population standard deviation, , is NOT known. 3. Either or both of these conditions is satisfied: The population is normally distributed or . 30 n > Test Statistic for Testing a Claim about a Mean with NOT known / x t sn μ = Use the student t -distribution (table A-3) and use df = n – 1 to calculate critical values and P-values. Example Use the Traditional Method, P-value Method and Confidence Interval Method to perform the Hypothesis Test for the following claim: A premed student in a statistics class is required to do a class project. Intrigued by body
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This note was uploaded on 04/08/2008 for the course MAT 143 taught by Professor Stone during the Spring '07 term at North Shore Community College.

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Statistics 7.5 - 7-5 Testing a Claim about a Mean: Not...

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