Reference no: EM133010939

QUESTION 1 a. Determine whether each of the following statements is True or False.

i. If a researcher uses inferential statistics, the researcher will conclude information about the population based on a sample.

ii. Students' grades (A to F) are an example of nominal scale measurement.

iii. The weight of a laptop is considered to be a discrete variable.

iv. One of the advantages of personal interview is there is no interviewer influence.

v. The method of dividing the population elements into two groups according to income, selecting a simple random sample from each group is called stratified sampling.

b. Identify the variable as qualitative, quantitative continuous or quantitative discrete.

i. A person's state of residence.

ii. The length of time a football play lasts.

iii. The number of balloons in a store

iv. Salary received by employees in a firm.

v. The type of pets a person owns.

c. The manager of an electronic company wishes to estimate the average time (in minutes) for an operator to complete a certain job. The factory has 150 operators. 30 operators are selected at random using a table of random numbers and their time to complete a particular job is recorded.

i Identify the population for the above study.

ii. State the sampling frame for the above study.

iii. Name the variable of interest for the above study. State its type and its level of measurement.

iv. State the sampling technique used in this study. Give a reason for your answer.

v. What method of data collection is suitable for this research? State one advantage and one disadvantage of using this method.