In probability distribution theory, substantial efforts have been made in developing probability distributions for modelling lifetime from systems connected in series. However, there are several significant situations where empirical data set from such systems do not follow any of these existing distributions. Hence, it is essential to generate more flexible distributions for modelling lifetime data from series connected components. In this study, the Nadarajah Haghighi generalised power Weib...
Domestic tourism plays a significant role in Ghana‟s economy as it generates markets for a wide variety of tourism products but lags behind other countries like United Kingdom, Germany, Kenya and other countries in terms of domestic tourism expenditure. Furthermore, no expenditure was known about the general value of domestic tourism at both macro and micro levels. Being motivated by this necessity, the study had to investigate Ghana‟s domestic tourism demand for tourism products from 201...
A new family of distributions, by name generalized odd inverse exponential distribution was developed in this study. The new family of distributions were developed using the concepts of relative odds. The statistical properties such as quantile function, characteristic function, moments, moment generating function, mean residual life, inequality measures and order statistics for the new family of distributions were obtained. The maximum likelihood, ordinary least squares and Cramér-von Mises...
The Wa Regional Hospital’s live births and maternal mortality were analysed and forecasted in this study. The data were obtained from the Regional Hospital and covered the period from January 2009 to June 2020. This study applied Vector Autoregressive with exogenous variable to model the interdependent and dynamic structure that exists between the endogenous variables (live births and maternal mortality) and the exogenous variable (maternal age). Also, the dynamic structure of the observed ...
The main aim of the study was to examine the influence of modern agricultural practices and technologies on maize production. Data on yields for five different farming seasons and other attributes of Climate Smart Agriculture Technologies were obtained from three communities in the Lawra Municipality. The study identified a six factor solution which explained the correlation in the observed data without substantial loss of information. Multinomial Logistic Regression and Mixed Effect Linear R...
The Transmuted Type I General Exponential family of distributions as a new generator is proposed and studied. The new generator has a closed form and therefore very tractable, its hazard rate function has the flexibility to model different kinds of the bathtub shapes. Also, a comprehensive description of the statistical properties of the new generator including explicit expressions for the ordinary and incomplete moments, moments generating function, order statistics and stochastic ordering p...
This study models infant birth weight and investigate maternal predictors using lifetime data by taking into account the non-zero probability of zero occurrences of the response variable. The birth weights were found to be positively skewed and leptokurtic in nature. The average birth weight was found to be 2.9898kg. In modelling the determinants of infant birth weight, the Tweedie regression model was compared with Gaussian, Gamma and inverse Gaussian regression models. The performance of th...
The economy of Ghana largely depends on agriculture for its growth. In Ghana, agricultural productivity largely relies on rainfall. This study seeks to explore the rainfall pattern using data from the Ghana Meteorological Agency from January 1999 to December 2019 for the Navrongo and Bolgatanga weather substations. A univariate two-state Markov switching autoregressive model was used to characterize the distinct seasonal regime behavior of the rainfall in the study area. The data sets were fo...
Recently, statisticians have been exploring the generalization and extension of classes of distributions to make them more flexible for data analysis. There are a lot of data sets that are either extremely skewed, bimodal, bathtub or have heavy tails. However, inverse exponential distribution cannot model data sets that exhibit these features properly. In this study, a new family of inverse exponential distribution called T-inverse exponential {Y} family based on quantile function approach ha...
Malaria has become a common disease that affects the health of every household. The canker is expected to continue with its devastating effects for a long period given the absence of sufficient interventions to mitigate it. Several researches have been undertaken to investigate the pattern of malaria cases in Ghana. This study modeled the effects of climatic variables on monthly malaria cases in Wenchi Municipal using Poisson Switching Regression Model. Secondary data on malaria from January,...
Across the life cycle, energy and nutrient requirements vary depending on age, sex, physiological state, and physical activity levels. Universally, school meals are seen as a way of tackling malnutrition and poor eating behaviours in school children. The provision of meals by colleges of nursing is geared towards meeting the nutrient requirements of students, thereby, improving their nutritional status. The study focused on estimating the nutritional status and nutrient intake adequacy of stu...
Increasingly most people have their meals outside their homes and are vulnerable to illness caused by unsafe food. Unsafe food preparation and supply by vendors have made food safety a concern for public health. Tamale is a densely populated city in the northern part of Ghana and many food vendors abound. This study evaluated the nutrition knowledge, attitude, and food safety and hygienic practices of food vendors in the Tamale Metropolis of the Northern region, Ghana. An analytical cross-sec...
Pneumonia is an infection of the lungs. It causes inflammation of the alveoli making it fill with fluid, causing difficulty in breathing and reduces oxygen intake. It is the leading cause of deaths in children worldwide. In this study, secondary data on monthly pneumonia cases collected from the disease control unit from 2015 to 2020 of the Builsa North Municipality was modeled using discrete-time Markov chain modeling. The data was grouped into low, moderate and high states of the pneumonia ...
The no-slip boundary condition at a solid-liquid interface is primarily to understanding fluid mechanics. However, this condition is an assumption that cannot be derived from first principles and could, in theory, be violated. In this work, we investigate numerically and theoretically the subject involving partial slip boundary conditions. The physical imagery that emerges is that of a complex behaviour at an unsteady hydromagnetic stretching solid interface, with stagnation point flow involv...
The role of weight-for-age babies in the early childhood and its effects on later lives of children cannot be over emphasized. Birth weight according to Murthy (1991) is a key indicator of the incidence of infant mortality and thus, a reflection of the socio-economic development of a country. The main objective is to use statistical models to assess the change in weight of children over time and to investigate whether maternal characteristics such as marital status, educational level, religio...