If xbar = 1.602, sigma = 0.15, and n = 50, what is the z-statistic? How would you describe a confidence interval to someone who does not understand statistics? What is the point of it? Why do we do construct one? When you construct a 95%...
Assume the standard error comes from a bootstrap distribution that is approximately normally distributed. A 95% confidence interval for a difference in proportions p_1-p_2 if the samples have n_1 = 70 with hat{p}_ What is the importance of stat...
statistical mechanics, was laid down in the 19th century by Boltzmann and Gibbs. The first ingredient of this theoretical framework is the atomistic hypothesis: matter is made ofparticlesobeying Newton’s equations. Complications came about when, in the 20th century, it was found that matterobeysqu...
Using a non-parametric matching estimator and data from the 2005 Survey of Innovation from Statistics Canada they find that using tax credits and grants is more effective than using tax credits only, since firms benefitting from both types of incentives are found to introduce more new products, ...
a. What is the probability that the sample mean will be within Estimate the population mean, mu, using the given sample statistics; Sample statistics: alpha =0.04, sigma =2.15, x= 21.8, n=32. A population has a mean \mu = 85 and a standard deviation = 28. Find...
Nevertheless, to the best of our knowledge, this is the first empirical study to examine the implications of corporate sustainability information for the stock price crash risk during COVID-19. This risk captures the asymmetry in risk—especially the downside risk (Chen, Hong, & Stein, 2001; ...
put your name in a hat. If you comment and link back to my blog on your blog, you get your name in the hat twice. If you leave a comment, and link back to my blog, and mention my bookWe Are Not Alonein your blog…you get your name in the hat THREE times.What do you win?
(For instance, even with the newly discovered hat and spectre tiles, it remains an open question whether the isometric monotiling problem for (say) polygons with rational coefficients in is decidable, with or without reflections.) The main result of this paper settles this question (with one...
Quickly we can spot that the numerators for Cpk and Ppk are identical as are the numerators for Cp and Pp. In fact, the only difference between these formulas is the use of sigma-hat in the denominators of Cp and Cpk, but sigma in the denominators of Pp and Ppk.1Sigma is the Greek...
Your life is organized like an orbit. I know. 了解了这点,就知道为何四年于相隔千里的我们,似乎只是弹指一挥间而已。 我其实了解小女儿的心理,是希望多一点surprise多一点romantic多一点傻里吧唧的指天划地的。可惜我这方面的才能似乎多用在0,1组成的无机世界里了,于是只能委屈她了。大多数的时间,她就一...