Abstract Evaluation of customer satisfaction differs from one study to another. Studies have been differing with their focus and coverage. Most of studies focused on evaluating factors influencing customer satisfaction or associate customer satisfaction and quality of services. This paper used logistic regression to develop customer satisfaction model for Precision Air. Five dimensions or variables have been considered: on time performance; aircraft safety; schedule integrity; on board servi...
ABSTRACT Water is one of the fundamental element for life. For that reason, water usage forecasting is required for a proper planning and management. Because there is no single methodology that is used to forecast water demand (quantity of water to be used) across the world, this study intended to develop a statistical model for household water usage in Dodoma Municipality. Longitudinal and cross-sectional research design data from DUWASA, NBS and 395 households connected with piped water wer...
ABSTRACT The foundation of educational development of any country through all ages has been focusing on the quality basic education from which the primary school pupils’ academic performance is of greatest interest. Basing on its important, this study was conducted in order to develop a model for the primary school pupils’ academic performance in Tanzania. The study employed panel longitudinal research design. Secondary data that were used in the study were collected from the President�...
ABSTRACT In this manuscript, a group acceptance sampling plan (GASP) is developed when the lifetime of the items follows odd generalized exponential log-logistic distribution (OGELLD), the multiple number of items as a group can be tested simultaneously in a tester. The design parameters such as the minimum group size and the acceptance number are derived when the consumer’s risk and the test termination time are specified. The operating characteristic (OC) function values are calculated (...
ABSTRACT This study examined the modelling for maize prices using Autoregressive Integrated Moving Average (ARIMA) models so as to determine the most efficient and adequate model for analyzing the maize monthly prices at the Gairo market in Morogoro Region, Manyoni market in Singida Region and Kibaigwa market in Dodoma Region. The results indicate that ARIMA (1, 1, 4) model is the most adequate and efficient model for Gairo market, ARIMA (2, 1, 3) model is the most adequate and efficient mode...
ABSTRACT The study deals with the analysis of a trend model on quarterly and yearly rainfall over Tanzania; conventionally and modern approach for the last 30 years. The yearly rainfall data from 1986 to 2016 was obtained from the Tanzania Meteorological Agency, Dar es Salaam, Tanzania. The rainfall data from representative stations in the homogeneous rainfall zones over Tanzania were analyzed for trends by graphical and statistical Methods. In order to achieve the main and specific objectiv...
Abstract Tuberculosis (TB) is one of the most important public health problems in Tanzania and was declared as a national public health emergency in 2006. Community and individual knowledge and perceptions are critical factors in the control of the disease. The objective of this study was to analyze the knowledge and perception on the transmission of TB in Tanzania. Multinomial Logistic Regression analysis was considered in order to quantify the impact of knowledge and perception on TB. The ...
ABSTRACT Health care is essential to the general welfare of society. Studying the hospital patients‟ data distribution through the probability distribution analysis and forecasting time series model is very important in the health care system. This study has examined the hospital inpatients and outpatients' daily data for two years taken from DRRH through the hospital electronic health management information system. This study seeks to identify comprehensively the appropriate statistical di...
ABSTRACT A group acceptance sampling plan is developed for odds exponential log logistic distribution (OELLD) based on truncated lifetime with a known shape parameter. At a specified level of consumer risk and at the predefined test termination time, we derived the minimum number of groups required for a given group size and the acceptance number using the two-point approach by satisfying the producer’s and the consumer’s risks at the specified quality levels, while the termination time a...
ABSTRACT This research gives some statistical quality control techniques and reliability estimation based on exponentiated inverse Rayleigh distribution (EIRD) which can be applied in different industries so as to improve the quality of their products. EIRD has been obtained through generalization process and its mathematical properties were discussed. Estimation of unknown parameters was done by using maximum likelihood method, least square method, weighted least square and percentile estima...
ABSTRACT Savings and credit cooperative societies (SACCOS) in developing countries like Tanzania are very importance in solving the financial problem to low income groups especially in rural areas. SACCOS have the sole role of mobilizing savings that creates the source of funds to benefit their members. But for a SACCOS to prosper in its role of financial intermediation, it has to give more loans and ensure that most of them are repaid in time. To plan for such achievements the SACCOS needs a...
Abstract The survival patterns and their influencing covariates (factors) for hemo-dialysis patients at Muhimbili National Hospital (MNH) in Dar es Salaam Tanzania are explained in this dissertation. Number of hemo-dialysis that a patient had, alcohol intake history and blood transfusion status of patients were significant variables for failure. The study explored that, the survival times for hemo-dialysis patients at Muhimbili National Hospital follow lognormal distribution and therefore, pa...
ABSTRACT The occurrence of overweight and obesity has serious health implications. The 2010 Tanzania Demographic and Health Survey data set was reanalysed to compare the prevalences of overweight and obesity between Mainland Tanzania and Zanzibar and to determine how demographic factors can predict overweight and obesity across the United Republic of Tanzania. About 7.92% of the Tanzanian women of reproductive age were obese, 15% were overweight, and 11.5% were underweight.Women fromMainland ...
ABSTRACT This study aimed at modelling and forecasting of the daily stock prices of NMB and CRDB on a short-term basis by using the autoregressive integrated moving average (ARIMA) models and exponential smoothing models. It was guided by three specific objectives, which were: to fit models to the daily stock price data of NMB and CRDB banks in Tanzania, to select the best fitted model of CRDB and NMB by using model selection criteria and; to forecast and evaluate the forecasted daily stock p...
ABSTRACT Malnutrition remains a factor, directly or indirectly, in 60% of 11 million deaths of children aged less than five years globally each year. Hence, proper nutrition during infancy and early childhood is fundamental to the development of a child’s potential for normal growth, development, and survival of infants and children, particularly in developing. This study intent was to examine feeding patterns, practices and factors associated with exclusive breastfeeding and complementary...