Reference no: EM131522172 , Length: 4

Instructions: All of the questions on this examination should be answered on the sheets provided. Write your name and your student number at the top of each sheet. Be certain to indicate the proper number before each of your answers. You will answer a total of six questions for this test (two questions from each group). Remember to show your work if an answer requires a mathematical solution. If you need additional space, you may write on the back of the answer sheets.

Answer any two of the following four questions.

1. Assume you have a data set from a normally distributed random variable. Answer the following questions about it.

a. Will the random variable be discrete, continuous, or neither? How do you know?

b. Will the data be qualitative or quantitative? How do you know?

2. Assume the following data were gathered by a manufacturer of a robotics component, in units of days of continuous use until the component fails. There are 60 measurements in this data set. Show a histogram of this data set with 10 bins of equal size, spanning the range from the data minimum to the data maximum.

142	147	127	161	145	137	122	123	141	139	139
135	135	130	147	118	154	133	136	129	139	131
143	130	160	127	127	145	144	155	128	124	144
133	136	133	151	131	133	119	122	139	128	121
142	136	148	136	121	131	125	120	123	145	140
150	136	135	133	134