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- Calculate Pearson’s coefficient of skewness. Hence, describe the shape of thedistribution of the waiting time for counter A and B.The authors of this study report a Pearson correlation coefficient estimate of r = 0.23 with a p-value of <0.01. Interpret.In carrying out chi-square analysis, if one or more of the observed frequencies is less than five (5), rows or columns should be combined so that each value of observed frequency is at least 5. True or False?
- Consider a regression analysis with n = 47 and three potential independent variables. Suppose that one of the independent variables has a correlation of 0.95 with the dependent variable. Does this imply that this independent variable will have a very large Student’s t statistic in the regression analysis with all three predictor variables?Imagine a family member looks over your shoulder as you look at the variance equation Σki=1(xi − μ)2P(X = xi) and asks why the P(X = xi) term is there. What would you say?The critical value for the Pearson's correlation coefficient for two variables collected from 15 people (alpha = 05) would be?
- Where did we get the one over two-squared? I don't understand why it is one over 2^2 Variance (Px+Py).According to Johns Hopkins Medicine, the healthcare providers consider a fever to be 100.4◦F. Data was acquired in a health center that observed 24 adults with COVID- 19. We want to find out if the sample mean of 104◦F body temperature of adults with COVID-19 is significantly higher than the body temperature of a person with fever. Consider the sample SD of 10.2◦F.Are any of these results significant?
- . A survey was conducted in respect of marital status and success in examination. Out of 2,000 persons who appeared for an examination, 80% of them were boys, and the rest were girls. Among 300 married boys 140 were successful. 1100 boys were successful among unmarried boys. In respect of 100 married girls 40 were successful, 200 unmarried girls were successful. Construct two separate nine-square tables, and find out the Yule's Coefficient of Association to discuss the association between marita! and passing of examination,Consider the following data on marks obtained in Quizzes 1 and 2 by a sample of 10 studentsenrolled in a statistics classQuiz 1 Quiz 25 2015 1612 1213 1015 1414 1513 1012 1210 1215 14 For the marks in each quiz calculate:i. Coefficient of Variationii. Lower Quartileiii. Upper QuartileA lamp manufacturer company tests the two new models of LED spotlights for commercial use, trying to decide between 2 models.At the moment the useful life tests are carried out as shown in the table.Perform a two-factor LSD discrimination process with an error of 5%