Subject: STA404: Statistics for Business and Social Sciences

QUESTION 1 A random sample of employees was selected from three different types of stores at the mall and their ages were recorded. Assume that the assumptions for the parametric test are met. The data were analyzed and the result is shown below. a) Calculate the sum of squares between groups. b) Given the between-group variance …

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A study was conducted to determine the relationship between a driver’s age and the number of accidents he or she had over a 3-year period. The data collected for 10 drivers are shown below. a) Identify the predictor and response variables. b) Compute the value of Z. Explain the value obtained. c) State the value …

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QUESTION 3 A manager at one of the popular Telco companies is currently conducting a survey regarding the service failure at their service counter. The main objective of the survey is to find out the factors that cause the failure. He randomly selected five service counters from ten available service counters all over Malaysia. A …

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QUESTION 4 The depression scores of 25 patients were recorded before and after they had undergone therapy. The scores were analyzed to see the effectiveness of the therapy. The outputs are indicated below. Assuming the score of depression is normally distributed. a) Find the values of X and Y. b) State the 95% confidence interval …

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QUESTION 5 A study has been made to compare the average amount of sugar content for two brands of energy drinks. Ten energy drinks of brand P and eight energy drinks of brand Q were sampled and the amount of sugar content was recorded for this study. The following is the SPSS output for the …

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QUESTION 6 There is an increasing trend in purchasing the laptop due to the pandemic Covid19. Hence, a group of researchers intends to describe this scenario by using descriptive statistics. SPSS output illustrating the information on the number of purchasing laptops (in a month) according to fifteen states in Malaysia is shown in the following …

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QUESTION 7 A dairy products factory wants to know the milk flavor preferred by the buyers. The researchers randomly selected several supermarket visitors and conducted an experiment. Buyers were given three cups of milk with different flavors to drink. After that, they were asked to choose one flavor that they preferred the most. The data …

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Healthcare facilities are essential for providing quality and accessible health services to the population. This is because healthcare facilities are where healthcare professionals provide care to patients. The quality of care that patients receive depends on the availability of healthcare professionals, the types of healthcare professionals available, and the skill mix of the healthcare workforce. …

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Question 1 A physiotherapist in a private hospital located in Selangor would like to do a study on patients diagnosed of having Scoliosis problems. Their heights (in cm) were recorded and are approximately normally distributed. The recorded data is shown in the following table. Use any statistical software to generate the descriptive statistics for the …

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