Distributions of the ratio of two ranges of samples from nonnormal populations

The probability density function of the ratio of two ranges of samples from a population represented by an Edgeworth series is developed. The corrective functions arising due to nonnormality are tabulated for the upper 5 and 1 percent normal theory points and compared with those of F‐distribution. Indications are that both the variance ratio and the range ratio test are affected by nonnormality almost to the same extent. If there is any numerical difference for larger samples (say, n_:1 = n₂ >= 5), it is in the cases of symmetrical populations. The theoretical results are compared with those obtained from Monte Carlo sampling from x² and t‐distributions with various shape parameters.     

An Improved Class of Estimators for the General Population Parameters Using Auxiliary Information

This article suggests an improved class of estimators for estimating the general population parameter using information on an auxiliary variable. The properties of the suggested class of estimators have been studied under large sample approximation. The general results are then applied to estimate the population coefficient of variation of study variable using auxiliary information. An empirical study is given in support of the theoretical results.     

An alternative estimator for multiple characteristics in rhg sampling scheme

The problem considered relates to large scale sample surveys, A new estimator of population total for the characteristics that are poorly correlated with. the selection probabilities,has been developed for the RHC sampling scheme, She relative efficiency of the proposed estimator has been studied under a super-population model, A numerical. Investigation into the performance of the estimator, has also been made.     

Effectiveness of policy interventions during financial crises in China and Russia: Lessons for the COVID-19 pandemic

We test the hypothesis that policy interventions in crisis periods are less effective when markets are integrated, drawing on China and Russia’s experience during the global financial crisis. We conduct an event study to examine the response of stock market returns and volatility to intervention efforts using DCC-GARCH and Markov Regime Switching Models. We then estimate the extent of integration of China and Russia with the US market and assess its impact on policy interventions’ effectiveness based on a regression framework. We find that interventions were effective in China but failed in Russia, where greater global links were evident. Our findings provide important policy lessons to address the impact of the current COVID-19 pandemic, given the increasing global market linkages.     

E-governance and Corruption-developments and Issues in Ethiopia

This paper reports the results of a survey of 400 respondents in Ethiopia about factors generating corruption and the potential of e-Governance to mitigate corruption. It is suggested that e-Governance can help not only in weeding out corruption but also in the establishment of sounder government citizen relationships in Ethiopia. While e-Governance cannot cure all the structural factors that breed corruption in the society, strategic implementation of e-Governance can help improve the critical variable in combating corruption-government citizen relationships. It is argued that while e-Governance initiatives can make important contributions to improving public services they can best do so by helping improve overall relationships between governments and citizens.

Underwriting and Calls of Convertible Bonds*

We model convertible bond calls under asymmetric information where, unlike Harris and Raviv (1985), we consider a nonzero call price and a call notice period. In the model, the use of underwriters conveys negative information. Consequently, the stock price decline is greater for underwritten calls than for nonunderwritten calls. Furthermore, underwritten calls are made earlier and when the conversion option is less deep in the money. Underwriting commissions and the stock price decline associated with a call are negatively related to the extent that the conversion option is in the money before the call. Empirical evidence in this paper and Singh, Cowan, and Nayar (1991) are consistent with the model's predictions.