## Solution Library

#### Calculate And Test Hypotheses For Given Data

Question Yi X1i X2i X3i X4i 0.076 0.022 0.048 0.027 0.042 0.227 1.111 0.15 0.136 0.152 0.041 0.003 0.027 0.024 0.076 0.063 0.06 0.041 0.056 0.037 ... Read More

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#### Testing Hypotheses Of Perceived CAP Learning Rovai 2009 Data

Question Research has shown that males and females differ in their community connectedness, learning community, and perceived learning (Rovai & Baker, 2005). Females feel more connected to other students in their courses, and their online learning experiences are more aligned to their education ... Read More

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#### Can Paired Means Be Statistically Significant

Question 1. If the overall F is statistically significant, at least one pair of means must also be statistically significant. a. True. b. False.   2. It is possible for all paired means to be statistically significant. a. True. b. False.   Summary The question belongs to Statisti ... Read More

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#### Can F Be Negative

Question 1. F can never be negative. a. True. b. False.   2. If the HSD is 22, a paired mean difference of 23 would indicate that that pair contributed toward the significant F. a. True. b. False.   Summary The question belongs to Statistics and it discusses about two true and fa ... Read More

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#### ANOVA Drawback On Type 1 Error

Question 1. One drawback of ANOVA is that it allows type 1 error to escalate for every additional group tested.   a. True. b. False.   2. When and why would you conduct post hoc tests as a follow up to the overall F test?   a. When the overall F test is NOT significant; to det ... Read More

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#### Appropriate Use When Testing Hypothesis For Studying Groups

Question 1. The appropriate statistic to use when testing the hypothesis for a study with three treatment groups is a   a. One-sample t test. b. Two-sample t test. c. ANOVA F test. d. Either b or c is appropriate.   2. Assume that the group means in a study are as follows: Group 1 ... Read More

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#### Identify HSD For Given Data

Question 1. Assume that the group means in a study are as follows: Group 1 = 20. Group 2 = 18. Group 3 = 37. If the Tukey HSD critical value is 18, what can you say about the location of the significant difference between the groups?   a. It lies between Groups 1 and 2 only. b. It lies ... Read More

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#### Check Whether Or Not For Pearsonâ€™s r Both Variables Must Be Linear

Question 1. One way means that   a. There is only one correct way to calculate the test statistic. b. The results can be in only one direction. c. There is only one sample (group) in the study. d. There is only one IV in the study.   2. For a Pearson's r, both variables must be lin ... Read More

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#### Increase In Correlation And Scores Spread Wide

Question 1. As the strength of a correlation increases, the scatterplot of the scores becomes more widely spread out.   a. True. b. False.   2. When scores vary in the same direction on two variables, the relationship is positive.   a. True. b. False.   Summary These ... Read More

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#### Are Hours Of Sleep And Tiredness Related

Question 1. Hours of recent sleep and reported tiredness tend to be positively related.   a. True. b. False.   2. Assume that the bulk of your scatterplot data graphs into the following two quadrants of a Cartesian coordinate system: (+X, +Y) and (–X, –Y). This relationsh ... Read More

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#### Two Features Of Correlation Coefficient

Question 1. A study reports: r(95) = +0.92, p < 0.01. How confident can you be that the obtained correlation is real and not due to mere chance?   a. 92% confident. b. 95% confident. c. 99% confident. d. There is not enough information to tell.   2. Any correlation coefficient i ... Read More

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#### What Do We Seek To Determine In Correlational Study

Question 1. The two variables in a correlational study are called the   a. Predictor and predicted. b. Predictor and criterion. c. Independent and dependent. d. Relator and relatist.   2. In a correlational study, we seek to determine   a. If the IV causes an outcome in the ... Read More

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