Answered: Question 2 The ANOVA test is O only… | bartleby

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section: Chapter Questions

Problem 8SGR

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Question 2
The ANOVA test is
O only appropriate if both variables are categorical.
O sensitive to lack of Normality.
O robust and not sensitive to lack of Normality.
O robust and very sensitive to outliers.
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What is an experiment?
When calculating an ANOVA, if the research hypothesis is in fact true, then. variance due to group membership is greater than natural variability. the F ratio will always be negative. natural variability is greater than variance due to group membership. F will be very close to zero. No new dat
3) The researchers want to know if female birds spend more time resting than male birds. There are some female birds that spend more time resting than average male, and some males that spend more time resting than the average female. The researchers decide that they need to use inferential statistics to test for a difference between male and female birds. Which statistical test should the use to analyze their data in this way? O Correlation O Regression T-test O ANOVA
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This research was conducted with Korean adolescents in the Los Angeles area. Would you be willing to generalize the results of this study to Korean adolescents who live in other regions of the country? Why or why not.
If a research study in biomedical field found a moderate negative and statistically significant relationship between two variables, which of the following statistical parameters would you expect to see? -.48, p<.05 -48, p<.01 -.68, p<.01 1, p<.01
Historically, the mean systolic blood pressure (SBP) has been a rather high 139 units for adults in the population. We are interested in whether a recent health campaign on diet and exercise has potentially lowered the mean. Which are the correct hypotheses? Null Hypothesis: population mean SBP equals 139; Alternative Hypothesis: population mean SBP not equal to 139 Null Hypothesis: population mean SBP greater than 139; Alternative Hypothesis: population mean SBP less than 139 Null Hypothesis: population mean SBP equals 139; Alternative Hypothesis: population mean SBP less than 139 Null Hypothesis: population mean SBP equals 139; Alternative Hypothesis: population mean SBP greater than 139
Say we have a dataset consisting of 20 observations. From the observations and their corresponding normal scores, we compute a sample cor-relation coefficient to be approximately 0.89. What can we say about the distri-bution of our dataset ? Explain your answer.
Match to the appropriate answer. You will not use all options and you may not use each option more than once. Dummy variable Coefficient (beta) Correlation coefficient Heteroscedasticity p-value R² + Residual A. Used with categorical variable B. Lower value means statistical significance at a higher confidence level. C. When the distribution of residuals does change as the independent variable changes. D. Higher value means statistical significance at a higher confidence level. E. Difference between the predicted and observed values. F. When the distribution of residuals does not change as the independent variable changes. G. Min=-1, Max=1 H. Min-0, Max=1 1. Used to determine how much dependent variables changes if independent variable changed.
After careful consideration Dr. DeCicco decides to conduct a study to determine whether individuals who own dogs versus those who do not own dogs visit the doctor less often. After collecting the data, what type of test would Dr. DeCicco conduct in SPSS? Independent t-test Dependent t-test Chi-square Correlation/Regression One-way ANOVA
Can we use the standard deviation to compare variability of two or more datasets? Why or why not? If the data is highly skewed, can we still rely on the kurtosis coefficient? Why or why not?
A researcher wants to measure average cardiovascular health of university students and compare those scores to the average scores in the general population. Assuming that population variance is known, what statistical test is most appropriate for this study? independent-samples t-test single-sample t-test z-test for sample mean related-samples t-test

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