Ch 8 Sec 1

Ch 8 Sec 1 - Chapter8 Section1 StepsInHypothesis...

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Chapter 8 Section 1 Steps In Hypothesis  Testing – Traditional  Method Mr. Kenneth Horwitz
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Hypothesis Testing Three methods used to test hypotheses:  1. The traditional method 2. The  P -value method 3. The confidence interval method
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Steps in Hypothesis Testing- Traditional Method A   statistical hypothesis  is a conjecture about a  population parameter.  This conjecture may or  may not be true. The  null hypothesis , symbolized by  H 0,    is a  statistical hypothesis that states that there is no  difference  between a parameter and a specific  value, or that there is no difference  between two  parameters. The  alternative hypothesis  is symbolized by H1.
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Steps in Hypothesis Testing- Traditional Method The  alternative hypothesis , symbolized by  H 1,  is a statistical hypothesis that states the existence  of a difference  between a parameter and a  specific value, or states that there is a difference   between two parameters.
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Situation A A medical researcher is interested in finding out whether a  new medication will have any undesirable side effects. The  researcher is particularly concerned with the pulse rate of the  patients who take the medication. Will the pulse rate increase,  decrease, or remain unchanged after a patient takes the  medication?  The researcher knows that the mean pulse rate  for the population under study is 82 beats per minute. The hypotheses for this situation are This is called a  two-tailed  hypothesis test.  1 : 82 H μ≠ 0 : 82 H μ=
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Situation B A chemist invents an additive to increase the life of an  automobile battery.  The mean lifetime of the automobile  battery without the additive is 36 months. In this book, the null hypothesis is always stated using the 
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Ch 8 Sec 1 - Chapter8 Section1 StepsInHypothesis...

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