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    Examples...

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    examples k k k k k 1-Sample Test Set Up 1. On the icon menu, select STAT2. Execution 2. When using list data (List is selected as the Data parameter), be sure to input data into the list first. 3. 3(TEST)b(Z)b(1-Smpl) ... 1-Sample Test 4.

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    examples Example Five new members of a football team are timed for the 100- meter dash, yielding the following times. A: 12.5 B: 11.6 C: 10.8 D: 12.8 E: 11.4 The average time of current team members is 11.4 seconds, with a standard deviation of 1.30.

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    examples k k k k k 2-Sample Test Set Up 1. On the icon menu, select STAT2. Execution 2. When using list data (List is selected as the Data parameter) , be sure to input data into the list first. 3.

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    examples Example A consumer group is testing camp stoves. To test the heating capacity of a stove they measure the time required to bring 2 qt of water from 50 q q q q q F to boiling (at sea level). Two competing models are under consideration.

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    examples k k k k k 1-Prop Test Set Up 1. On the icon menu, select STAT2. Execution 2. 3(TEST)b(Z)d(1-Prop) ... 1-Prop Test 3. Set calculation parameters. 4. Align the cursor with [Execute] 1(CALC) ... Performs calculation. 6(DRAW) ... Draws graph.

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    examples Example A team of eye surgeons has developed a new technique for a risky eye operation to restore the sight of people blinded from a certain disease. Under the old method it is known that only 30% of the patients who undergo this operation recover their eyesight.

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    examples k k k k k 2-Prop Test Set Up 1. On the icon menu, select STAT2. Execution 2. 3(TEST)b(Z)e(2-Prop) ... 2-Prop Test 3. Set calculation parameters. 4. Align the cursor with [Execute] 1(CALC) ... Performs calculation. 6(DRAW) ... Draws graph.

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    examples Example The County Clerk wishes to improve voter registration. One method under consideration is to send reminders in the mail to all citizens in the county who are eligible to register. As a pilot study to determine if this method will actually improve voter registration, a random sample of 1224 potential voters was taken.

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    examples k k k k k 1-Sample Test Set Up 1. On the icon menu, select STAT2. Execution 2. When using list data (List is selected as the Data parameter), be sure to input data into the list first. 3. 3(TEST)c(T)b(1-Smpl) ... 1-Sample Test 4.

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    examples Example A company manufactures large rocket engines used to project satellites into space. The government buys the rockets, and the contract specifies that these engines are to use an average of 5550 lb of rocket fuel the first 15 sec operation. The company claims their engines fit specifications.

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    examples k k k k k 2-Sample Test (Pooled On) Set Up 1. On the icon menu, select STAT2. Execution 2. When using list data (List is selected as the Data parameter), be sure to input data into the list first. 3.

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    examples Example Two different processes (Type A and Type B) are used to produce tinplate. The following values show the weights of samples produced by each process. Type A: 105 108 86 103 103 107 124 124 Type B: 97 103 107 Using the level of significance 0.05, test the null hypothesis that the tinplate produced by the two processes are of the same level.

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    examples k k k k k 2-Sample Test (Pooled Off) Set Up 1. On the icon menu, select STAT2. Execution 2. When using list data (List is selected as the Data parameter) , be sure to input data into the list first. 3.

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    examples Example Two competing headache remedies claim to give fast-acting relief. An experiment was performed to compare the mean lengths of time required for bodily absorption of brand A and brand B headache remedies. 12 people were randomly selected and given an oral dosage of brand A.

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    examples k k k k k LinearReg Test Set Up 1. On the icon menu, select STAT2. Execution 2. Input data into the list. 3. 3(TEST)c(T)d(LinReg) ... LinearReg Test 4. Set calculation parameters. 5. Align the cursor with [Execute] 1(CALC) ... Performs calculation.

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    examples Example A survey conducted by a city on its real estate investments revealed the following data on the relationship between area and price. Does the data indicate that the value , that is, the slope of the popula- tion regression line, is not zero, which would mean that (Area) can be use as a predictor of y (Sales Price)? Use a 5% level of significance.

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    examples k k k k k Test Set Up 1. On the icon menu, select STAT2. Execution 2. 3(TEST)d( )... Test 3. Input data into the Matrix. 4. Set calculation parameters. 5. Align the cursor with [Execute] 1(CALC) ... Performs calculation. 6(DRAW) ...

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    examples Example A certain club collected data on the attendance at meetings by married status, and obtained the data shown below. Married Divorced Widowed Single Row Totals Often Absent Seldom Absent Never Absent Column Totals Test the null hypothesis that two phenomena are independent using the level of significance of 0.05.

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    examples k k k k k 2-Sample Test Set Up 1. On the icon menu, select STAT2. Execution 2. When using list data (List is selected as the Data parameter), be sure to input data into the list first. 3. 3(TEST)e(F)... 2-Sample F Test 4.

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    examples Example There are two possible routes to get to the airport from a certain company, and so manager wants to determine which route is the fastest in order to make a plane that leaves at 7 o'clock. One route was researched five times and then the other route was researched five times, producing the data shown below.

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    examples k k k k k One-Way ANOVA Set Up 1. On the icon menu, select STAT2. Execution 2. Input data into the list. 3. 3(TEST)f(ANOVA) ... Analysis of Variance (ANOVA) 4. Set calculation parameters. Specify 1 for How Many setting. 5.

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    examples Example A psychologist is studying pattern recognition skills under four laboratory settings. In each setting, a fourth-grade child is given a pattern recognition test with ten patterns to identify. In setting A, the child is given praise for each correct answer and no comment about wrong answers.

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    examples k k k k k Two-Way ANOVA Set Up 1. On the icon menu, select STAT2. Execution 2. Input data into the list. 3. 3(TEST)f(ANOVA) ... Analysis of Variance (ANOVA) 4. Set calculation parameters. Specify 2 for How Many setting. 5.

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    examples Procedure 1 m STAT2 2 bwbwbwbwcwcwcwcwe bwbwcwcwbwbwcwcwe bbdwbbgwbdjwbdcwbddwbd bwbcgwbccw 3 3(TEST) f(ANOVA) 4 2(2)c 1(LIST) bwc 1(LIST) cwc 1(LIST) dwc 1(None) c 5 1(CALC) 6(DRAW) Result Screen • Time differential (A) : Since P=0.2458019517 > 0.05 (level of significance), we can not reject the null hypothesis. •...

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