QUESTION 1 [12] 1.1 Indicate whether the following statements are True or False. Give reasons for your answer. a) For this module, the level of significance is always given as 0,005. (2) b) A Type I error is made by rejecting the null hypothesis when it is in fact true. (2) c) If you get a negative value for the F-test, this means the test […]
Posted: April 25, 2024
Question 1: 1.1. In the survey of 50 workers in BPC, the amount of wages per workers was recorded and the following data is obtained: 92 51 90 56 59 74 96 85 93 72 67 74 96 73 80 50 77 65 70 62 92 68 87 79 94 76 87 74 63 94 68 65 93 90 80 86 86 69 88 89 […]
Posted: April 20, 2024
Question 1: 1.1. A manufacturer of computer chips claims that less than 10% of his products are defective. When 1,000 chips were drawn from a large production, 7.5% were found to be defective. a) What is the population of interest? (2) b) What is the sample? (2) c) What is the parameter? (2) d) What is the statistic? (2) e) Does the value 10% refer […]
Posted: May 16, 2023
Question 1 [9] A college placement office sent a questionnaire to a sample of business school graduates requesting information on monthly starting salaries. Below are the monthly starting salaries for the sample of 12 business school graduates (in dollars): 3850 3950 4050 3880 3755 3710 3890 4130 3940 4325 3920 3880 a) Calculate the mean, median and mode monthly starting salary for this sample of […]
Posted: April 12, 2023
QUESTION ONE [12] The following data represents the number of tests conducted in a day by employees at Sharp Labs Number of tests Frequency [50: 60) 12 [60: 70) 20 [70: 80) 9 [80: 90) 6 [90: 100) 3 Calculate the average number of tests conducted by employees in the Labs (2) Calculate the median (2) Calculate the mode (2) From 1.1, 1.2 and 1.3 […]
Posted: April 11, 2023
Question 1 (40 marks) Show how statistics and data can help in our understanding of relevant issues in our daily lives by developing a research question that you would like to examine, and that could be addressed scientifically (e.g., does exercising daily help reduce depressive symptoms?). State your question and design an experiment to address your question. Limit yourself to one independent variable with two […]
Posted: October 18, 2022
