Reference no: EM1318529

Q1) Recent article in USA Today reported that job awaits only one in 3 new college graduates. Major reasons given were the overabundance of college graduates and weak economy. Survey of 200 recent graduates from school revealed that 80 students had jobs. At 0.02 significance level, can we conclude that larger proportion of students at your school has jobs?

 

i) More types of computations can be performed with data at nominal level than with data at the interval level. True or False?

 

ii) Responses on opinion poll are qualitative or quantitative?

 

iii) Using random digit dialling, researchers called 1599 people and asked what problems (such as childcare) kept them from exercising.(Recognize the sampling technique used and describe potential sources of bias if any).

 

iv) Some quantitative data sets don't have a median. True or False?

 

v) Create a data set in which mean is not representative of a typical number in data set.

 

vi) 12  9  7  5  7  8  10  4  11  6 . Determine the range, mean, variance, and standard deviation of the population set.

 

vii)  4  7  7  5  2  9  7  6  8  5  8  4  1  5  2  8  7  6  6  9. (a) Determine three quartiles and (b) draw box-and-whisker plot of the data.

 

viii) In below problem use a calculator or computer to (a) Determine data set's first, second, and third quartiles, and (b) draw box-and-whisker plot that represents the data set.

 

TV Viewing. Number of hours of television watched per day by sample of 28 people

 

  2 4  1  5  7  2  5  4  4  2  3  6  4  3

 

  5 2  0  3  5  9  4  5  2  1  3  6  7  2