Harper MTH165 Homework Section 7.1 Latest 2020 MAY

MTH165 ELEMENTARY STATISTICS

Homework Section 7.1

In this section you learned some of the foundational material for the rest of the course for inferences.

All data are either qualitative or quantitative. 

If you have qualitative data, there will be some claimed value of __p_ for the population and you will compute some value of _p ?___ from the collected sample data.

If you have quantitative data, there will be some claimed value of _μ__ for the population and you will compute some value of __X ?__ from the collected sample data.

Define Type I Error:

Define Type II Error:

Fill in the following as you work through your given problems in MyOpenMath

1.            Individual:  _________ _____________________________________________________________

                Variable:  ______

                Since this variable is (qualitative/quantitative), we will use the random variable (X ?p ? )

                rv ___ = _______

                parameter:  _ p__ = __

                Set up the hypotheses using correct notation:                                   This test is (left-tailed,right-tailed, two-tailed)

                Type I Error:  __

                Type II Error:  __.

2.            Individual:  ______ ________________________________________________________________

                Variable:  ________ _______________________________________________________________

                Since this variable is (qualitative/quantitative), we will use the random variable (X ?p ? )

                rv ___ = ______ The percentage of 1295 randomly selected complaints filed with the FTC for that state that are for identity theft. _____________________________________________________________________

                parameter:  p ___ = ______ The percentage of all complaints filed with the FTC for that state that are for identity theft. _____________________________________________________________

                Set up the hypotheses using correct notation:                                   This test is (left-tailed,right-tailed, two-tailed)

                                                ____ __________

                                                ____ __________

                Type I Error

 

                Type II Error: 

3.            Individual:  ____ __________________________________________________________________

                Variable:  _____ __________________________________________________________________

                Since this variable is (qualitative/quantitative), we will use the random variable (X ?p ? )

                rv ___ = __ _________________________________________________________________________

                parameter:  _______________________________________________________________

                Set up the hypotheses using correct notation:                                   This test is (left-tailed,right-tailed, two-tailed)   

                Type I Error: 

                Type II Error: 

4.            Individual:  _____________________________________________________________________

                Variable:  ______ _________________________________________________________________

                Since this variable is (qualitative/quantitative), we will use the random variable (X ?p ? )

                rv ___ = _______

                parameter:  __ μ _ = ___________________________________________________________

                Set up the hypotheses using correct notation:                                   This test is (left-tailed,right-tailed, two-tailed)

                Type I Error:

                Type II Error: 

                What does the “p” in “p-value” stand for? ____ _______________________

                In the last unit we defined an unusual event to be an event with a probability that was less than or equal to 0.05.  You learned in this section that the cutoff probability between unusual and not so unusual events is called _______________________________________ and is designated with the symbol _p _