QMS 202 Lecture Notes - Null Hypothesis, Type I And Type Ii Errors, Standard Deviation
11 Apr 2011
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What is hypothesis testing: a procedure based on sample evidence and probability theory which determine whether the hypothesis is a reasonable statement, the procedure for testing a hypothesis. Compute the value of test statistic and p-value. Alternative hypothesis data provide evidence that the null hypothesis is false. The bigmacburger restaurant chain claims that the waiting time of all customers for service is normally distributed, with a population mean of waiting time of 4 minutes and a population standard deviation of 1. 4 minutes. The quality assurance department found in a sample of 60 customers at yonge and dundas that the mean waiting time was 4. 1 minutes. 1-sample z test m > 4 z = 0. 55328 p = 0. 29003 x = 4. 1 n = 60. Let m be the population mean of waiting time. Since the p-value > 0. 05, do not reject the null hypothesis.
