The owner of an automobile repair shop studied the waiting times for customers who arrive at the shop for an oil change. The following data with waiting times in minutes were collected over a one-month period. Click on the datafile logo to reference the data. 251012 44517 11898 122168 713183 (a)Develop a frequency distribution using classes of 0-4, 5-9, 10-14, 15-19, and 20-24. ClassFrequency 0-4 5-9 10-14 15-19 20-24 Total (b)Develop a relative frequency distribution using the classes in part (a). If required, round your answers to two decimal places. ClassRelative Frequency 0-4 5-9 10-14 15-19 20-24 Total (c)Develop a cumulative frequency distribution using the classes in part (a). ClassCumulative Frequency 0-4 5-9 10-14 15-19 20-24 (d)Develop a cumulative relative frequency distribution using the classes in part (a). If required, round your answers to two decimal places. ClassCumulative Relative Frequency 0-4 5-9 10-14 15-19 20-24 (e)What proportion of customers needing an oil change who wait 9 minutes or less

its definatley   this on your answer choice?

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.

think about the doctor who treated the major and the speaker in the short story "in another country." put yourself in the shoes of the doctor, and based on what you read in the story, write what you think his thoughts about the major and the speaker would be. use the following vocabulary in your response and change the form of these words as needed: detached resign withered