6.8 Obtain a test for Ho: B1 = c versL
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- Interpret the value of P(B')200 males and 200 females are asked a series of questions to determine whether they are considered heavy drinkers or not. 66 of the males are considered heavy drinkers. 83 of the females are classified as heavy drinkers. Execute a hypothesis test as to whether there is a relationship between gender and drinking at alpha=0.05 USING CHI-SQUARE. State Ho and Ha, calculate the p-value, determine whether you reject Ho and state the conclusion in plain English.What does z =? What does p=?
- A diet center wanted to test three different methods for losing weight to determine if the average weight loss (reported in pounds/week) for each method is the same. The results for the three methods are tabulated below. Given that there is a significant difference between the three methods, use the Tukey test to determine if there is a significant difference between each pair of methods. Let a=0.05. (picture attached)If the coefficient of determination between two independent variables is 0.47, what is the VIF? VIF= (Round to three decimal places as needed.)What is the difference between z test and t test
- In a survey of 100 randomly selected dentists, 24 dentists recommended Pearly brand over the other 5 toothpastes. Predict how many dentists out of 350 would recommend Pearly brand toothpaste. Paragraph B I U A/ V ▶ || O ... 11.A test is made of H0: u=5 vs Ha: u<5. The true value of u is 5, and is rejected. What type of error is this outcome? A. Type I error B. Type II errorLook at the table that lists SAT scores before and after a sample of five students took a prep class and explain a Type I error and Type II error pertaining to the problem. Ho: u=0 Ha:u>0 Student 1 2 3 4 5 SAT score before class 700 840 830 860 600 SAT score after class 720 840 820 900 700
- The amount of pollution produced by cars was measured for cars using gasoline containing different amounts of lead. A. Independent B. Dependent5. In a large class, the instructor ran a regression with the independent variable(x) as the gradc on the first cxam and the dependent variable(y) bcing the grade on the second exam She found the cquation to be: Y 29.25+57X Knowing that your friend got a 78 on the first cxam, what value would you predict she got on the socond exam? a) 71.43 b) 72.57 c) 78.00 d) 73.71 6. A test result is one that detects the condition when the condition is present is called. a) Truc Negative b) False positive c) Sensitivity d) True Positive 7. A test result is one that detects the condition when the condition is absent is called. a) True Negative b) False positive c) Sensitivity d) True Positive IN 8. The proportion of positives that correspond to the presence of the condition is called The formula is TN+FP a) Specilicity b) Predictive value positive c) Sensitivity dy Predictive valuc negalivcWhen testing whether or not B1 = 0, why is the F test a one-sided test even though Ha includes both B1, < 0 and B1, > O?
