'2 cdf' diaporamas de présentation

Section 8-5 Testing a Claim About a Mean: ? Not Known

Section 8-5 Testing a Claim About a Mean: ? Not Known. n = sample size. Notation. = sample mean. m = claimed population mean (from H 0 ). s = sample standard deviation. 1) The value of the population standard deviation ? is not known.

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Chi-square test or c 2 test

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X 2 Test of Independence

WARM-UP: To Examine whether the grades on the AP Statistics Fall Exam were independent of what class period you are in, a SRS of 70 students were selected. X 2 Test of Independence. H 0 : Test Grades and Class Period are independent.

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