ADM 2304 Study Guide - Midterm Guide: Bmw 8 Series, Minitab, Complement Factor B
8 Apr 2012
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One sample t-test one population mean ( ) left-tail z-test ( ) right-tail z-test ( ) two-tail z-test. Interpretation: 95% of the confidence intervals contain the true population mean. If sample is >10% of population, denominator by: ( ) find in t-table: since *| | + * +, reject. Since *| | + * +, do not reject. There is insufficient evidence to show: symmetrical ci for two-tailed: Lower bound for right-tailed: = (- : p-val = , ( ) | |- Find in middle of t-table subtract from 1 for right t. Since {p-val = } < { }, reject. Since {p-val = } > { }, do not reject. Used when population sd is known. n = sample size/# trials, x = number of successes, n-x = number of failures, p = probability of success, q = (1-p) = probability of failure. Test mean with normal distribution parametric test.
