Define log likelihood ? And purpose of use?
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Q: what does uncertainty of the average by propagation mean? show me an example
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A: Hint: We will state the correct option and the reason behind choosing that option.
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- Section 6.1 (please help with TI-84 calculator) Use the confidence interval to find the margin of error and the sample mean. (0.294, 0.450) the margin of error _____ the sample mean is. ______Gender and Frequency of Status Updates on Facebook The Pew Research Center conducted a survey of randomly sampled American adults, asking them about their use of social networking sites such as Facebook. The table below shows the self-reported frequency of status updates on Facebook by gender. Are frequency of status updates and gender related? chi-square statistic = i p-value = i Conclusion: ĮStatus/Gender Ho- Every day 3 - 5 days/week 1 - 2 days/week Every few weeks Less often Total Male Female Total 42 46 70 77 88 386 59 79 79 151 186 491 130 105 149 Round your answer for the chi-square statistic to one decimal place, and your answer for the p-value to three decimal places. 156 337 877 Table 1 Gender and frequency of status updates on FacebookData of variable-A is collected as shown to the right. Is the mean of Variable-A less than 80? State null hypothesis and choose level of significance, a = 0.05. (Use Excel ttest function, provide clear logic and reasoning.) Variable-A Variable-B 78.8 81.9 76.9 78.0 67.8 69.7 68.9 74.7 70.5 70.0 80.0 68.2 63.0 88.7 78.7 86.7 85.4 69.5 87.0 75.1 82.4 71.8 78.2 58.1 76.9 74.8 60.2 93.2 82.6 84.6 67.2 66.5 71.7 77.2 68.9 74.0 69.3 77.7 89.1 78.6 76.3 68.3 74.0 89.0 69.4 82.1 76.3 78.0 66.2 80.3 73.9 82.4 79.1 83.1 80.4 66.4 66.2 67.6 80.9 75.3
- Document (5) Saved Parents often wonder, usually out of sheer curiosity, how tall their child will be as an adult. When a child has a medical condition or appears to be growing abnormally, the need to under-stand his or her growth can be important. One early method involved simply doubling a child's height at age 2. This gave very inaccurate results, especially for girls. As a result, many better methods have been developed to try to accurately predict a child's eventual adult height from various factors. 1. One simple method to predict adult height is to average the parents' heights and then add 2.5 inches if the child is a boy or subtract 2.5 inches it the child is a girl. This method can be fairly accurate, but can also be as much as 5 inches above or below the child's eventual height. Write a formula or formulas to express this calculation, and clearly define any variables that you use. 2. Another method is to add the parents' heights and then add an additional 5 inches if the…Explain the logistic regression model, the independent variables and the dependent variable, assumptions of the model, as well as the objectives Given the data, what approach is taken to construct the model? Explain the effect of multicollinearity in logistic regression, and how multicollinearity is detected?Question A certain fast food chain occasionally suffers from reports of food poisoning. If the amount of time between reports Is exponentially distributed with a mean of 5 weeks, what is the variance of this distribution? Round your answer to four decimal digits and do not include units in your answer. Sorry, that's incorrect. Try again? 0.2019 FEEDBACK VIEW ANSWER SUBMIT Content attribution 近
- Im regressing a model with an endogenous variable as an independent variable, and using the Multiple Indicator approach. Whats assumptions needed for the Betas to be “identified”, and separately the Beta estimates to be “consistent”? What do we mean by “identified” and “consistent”?Question-6 The reaction time in seconds of a person can be modeled by a lognormal distributed with mean of -0.35 and standard deviation of 0.2. I. Find the probability that the reaction time is less than 0.6 seconds. II. Find the reaction time that is exceeded by 95 % of the populationTest the null hypothesis that ros has no effect on salary against the alternative ros has a positive effect at 10% significance level. Use T distribution with df= infinity
