A study of the effects of exercise used rats bred to have high or low capacity for exercise. There were 15 high-capacity and 9 low-capacity rats. To compare the mean blood pressure of the two types of rats using the conservative Option 2 t-procedures. What are the associated degrees of freedom?
Solution :
Given that ,
n1 = 15
n2 = 9
To compare the mean blood pressure of the two types of rats using the conservative
Option 2 t-procedures the associated degrees of freedom is ,
= 9 - 1
= 8
A study of the effects of exercise used rats bred to have high or low capacity...
A study of the effects of exercise used rats bred to have high or low capacity for exercise. There were 14 high-capacity and 18 low-capacity rats. To compare the mean blood pressure of the two types of rats using the conservative Option 2 t-procedures. What are the associated degrees of freedom
A study of the effects of exercise used rats bred to have high or low capacity for exercise. There were 25 high-capacity and 25 low-capacity rats. To compare the mean blood pressure of the two types of rats using the conservative Option 2 t- procedures. What are the associated degrees of freedom?
A study of the effects of exercise used rats bred to have high or low capacity for exercise. There were 13 high-capacity and 24 low-capacity rats. To compare the mean blood pressure of the two types of rats using the conservative Option 2 t-procedures. What are the associated degrees of freedom?
In a study on the effects stress on behaviour in rats, 78 rats were randomly assigned to either a stressful environment or a control (non-stressful) environment. After 21 days, the change in weight (in grams) was determined for each rat. The following table summarises the data on weight gain: n sample mean sample standard deviation Stress 23 21.08 13.49 No stress 55 28.14 15.39 1.2 (1 mark) Calculate the value of the t-statistic to three decimal places 1.3 (.6 marks)...
4) A study of depression and exercise was conducted. A total of 5 groups were used: each group differs by the extent to which group members exercise. A depression rating (scale: 1-100, a continuous variable) was given to all 1215 participants in the sample. An incompleted ANOVA table is provided below. What is the obtained F (i.e., value in Cell [8])? Sum of Squares df Mean Square F Between-Group [1] [2] [5] [8] Within-Group 138 [3] [6] [9] Total 220...
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(1 point) The following Exercise is based on summary statistics rather than raw data. This information is typically all that is presented in published reports. You can calculate inference procedures by hand from the summaries. Use the conservative Option 2 (degrees of freedom the smaller of ni1 and n2 - 1 for two-sample t confidence intervals and P-values. You must trust that the authors understood the conditions for inference and verified that they apply. This isn't always true.) Equip male...
The following Exercise is based on summary statistics rather than raw data. This information is typically all that is presented in published reports. You can calculate inference procedures by hand from the summaries. Use the conservative Option 2 (degrees of freedom the smaller of n1−1n1−1 and n2−1n2−1 for two-sample t confidence intervals and P-values. You must trust that the authors understood the conditions for inference and verified that they apply. This isn't always true.) Equip male and female students with...
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Toys for make-believe play make-up may contain high levels of flavors and/or fragrances that can cause an allergic reaction leading to skin blistering in sensitive individuals. To get an estimate of how much fragrance a certain toy lip gloss product contains, we select a simple random sample of 20 tubes of the product and measure the amount of fragrance oil contained in each tube. Assuming the dataset meets all conditions for the validity of the t inferences, which is the...