GIVE TYPED WRITING SO I CAN UNDERSTAND CLEARLY.

IF YOU CANNOT TYPE,PLEASE PROVIDE NEAT AND CLEAR HANDWRITING.DO NOT GIVE BLUR AND CLUMSY WRITING.IT IS HARD FOR ME TO UNDERSTAND.

Kindly give accurate and correct answers.Kindly give step by step working.Do not skip steps. Mention and be very clear about the formula and conversion

.Then,explain to support and prove the working and answers.I do not really understand.I hope you can help me to understand.Explain how you get the answers and about each working.

STA JANUARY 2018

QUESTION 1 a) Fill in the blanks. 1) The process of selecting a group of people within a population is known as ii) The purpose of a is to predict the cost, time and workforce needed for a survey. ill) A sampling frame is not required in a sampling. iv) The study on the entire population is called (4 marks) b) The Public Services Commission wishes to conduct a survey on the university students' intention of becoming science officers after they graduate. The study will be administered at TH University involving 3000 students enrolled in various Science courses. 25% of the students are majoring in Geology The other 30%, 20% and 25% are majoring in Biology, Physics and Chemistry, respectively. A random sample of 1500 students will be selected for the study. i) Identify the population and the sampling frame of the study. (2 marks) ii) Identify the variable and type of variable of interest. (3 marks) lil) Determine the most appropriate sampling method that can be used in this study. (2 marks) iv) Determine the most appropriate method of data collection for this study. (2 marks)QUESTION 2 a) A trap was used to catch beetles in a flour mill. The following data represents the number of beetles caught in the trap for a duration of 20 days. 12 0 7 6 12 22 14 7 7 15 31 23 10 25 20 11 12 15 7 1) Illustrate the stem and leaf plot for the given data. (2 marks) i) Find the first and third quartile for the number of beetles caught. (4 marks) ini) Find the median for the number of beetles caught. Explain the value obtained. (3 marks) iv) Find the interquartile range for the number of beetles caught. (1 mark) v) From (i), interpret the skewness of the distribution. (1 mark) b) The following table shows a summary of the results of a long jump event in a particular state competition. Distance jumped (in meters) Number of athletes 7.1