The first class in a relative frequency table is 50–59 and the corresponding relative frequency is 0.2. What does the 0.2 value indicate? Answer: 0.2 is equal to 1/5 or 20%, 0.2 indicates 20% of the data values are in this particular interval. 3. When you add the values 3, 5, 8, 12, and 20 and then divide by the number of values, the result is 9.6.
A. True B. False The p-value of .05 indicates that if Ho were true, a sample result as extreme as the one calculated would happen by chance approximately 5 times out of 1000. A. True B.
In this study, t= -3.15 describes the mental health variable. Yes it is significant because they are the variable being tested since the p value is 0.002 and the alpha is 0.05, the difference can cause the null hypothesis to be rejected. 3. Is t = −1.99 significant? Provide a rationale for your answer.
Page 10 Sensitivity Analysis: Benefits: Based on the Benefits Sensitivity graphs above we can see that the priorities of the two alternatives I have chosen change in a similar manner. Moreover, it seems like the cut-off points for Political and Social impacts are approximately the same. Thus, at the beginning the benefits of rejecting TransCanada application are always higher but as we increase all priorities shown above, the benefits of accepting Keystone XL will surpass the ones of rejecting it. Opportunities: If we examine the Opportunities Sensitivity graphs we can see that they are almost identical to the ones we have under Benefits. The priorities of the two alternatives I have chosen change in a similar manner.
that did not go well with efficient markets hypothesis. DFA believed value stocks outperformed because they were riskier companies. Value stocks could be infested with distressed companies. - 1993 paper - Three factor model: {Small - big, High - low, beta}. Variation in these 3 factors explained the bulk of variation in stock returns (regression analysis).
The confidence interval for the first group mean is thus (4.1, 13.9). Similarly for the second group, the confidence interval for the mean is (12.1, 21.9). Notice that the two intervals overlap. However, the t-statistic for comparing two means is: t= 17 − 9 2.5 2 + 2.5 2 = 2.26 which reflects that the null hypothesis, that the means of the two groups are the same, should be rejected at the α = 0.05 level. To verify the above conclusion, consider the 95 percent confidence interval for the difference between the two group means: (17 − 9 ) ± 1.96 × 2.5 2 + 2.5 2 which yields (1.09, 14.91).
Which t ratio in Table 2 represents the greatest relative or standardized difference between the pretest and 3 months outcomes? Is this t ratio statistically significant? Provide a rationale for your answer. The t ratio of 4.14 represent the greatest relative or standardized difference between the pretest and 3 months outcomes. Yes, it is significant because as indicated by the asterisk, p <0.05 is the least acceptable value for statistical significance.
I. The use of probationary periods tends to reduce adverse selection. II. Cost savings that result from contributory plans may be offset by increased adverse selection and increased administrative costs. A. I only B. II only C. Both I and II D. Neither I nor II 5.
Provide a rationale for your answer. The mental health t ratio of t=-3.15 ratio indicates the largest difference between the males and females post MI in the study. This t ratio is significant since it is causing the p value to be significantly low, less than the alpha 0.05 set for the
Step By Step Examples of Using the Pythagorean Theorem Example 1 (solving for the hypotenuse) Use the Pythagorean theorem to determine the length of X | | Step 1) Identify the legs and the hypotenuse of the right triangle. | The legs have length '6 and '8' . 'X' is the hypotenuse because it is opposite the right angle. See Picture | The hypotenuse is red in the diagram below: Step 2) Substitute values into the formula (remember 'c' is the hypotenuse) | A2 + B2 = C2 62 + 82 = X2 | Step 3) Solve for the unknown | | Example 2 (solving for a Leg) Use the Pythagorean theorem to determine the length of X | | Step 1) Identify the legs and the hypotenuse of the right triangle. | The legs have length '24' and 'X' are the legs.