QUESTION 16

1. The relationship between the probabilities of committing type 1 or type 2 error for any given sample size is

   	A.	Approximately 50-50
   	B.	Unimportant
   	C.	Direct
   	D.	Inverse
   	E.	All of the above
   	F.	None of the above

2.22222 points

QUESTION 17

1. When creating a confidence interval, the larger the confidence level required,

   	A.	The narrower the interval will be
   	B.	The wider the interval will be
   	C.	The smaller the margin of error will be
   	D.	The smaller the standard error of the estimate will be
   	E.	All of the above
   	F.	None of the above

2.22222 points

QUESTION 18

1. In hypothesis testing, the larger the test statistic is, the

   	A.	The lower the critical value will be
   	B.	The higher the critical value will be
   	C.	The higher the probability of committing type 1 error will be if you reject the null hypothesis
   	D.	The lower the probability of committing type 1 error will be if you reject the null hypothesis
   	E.	All of the above
   	F.	None of the above

2.22222 points

QUESTION 19

1. When estimating by drawing a sample from a population, the higher the sample size, the

   	A.	Less accurate the estimate will be
   	B.	More likely you will be fired from your job
   	C.	Higer the standard error will be
   	D.	Lower the standard error of the estimate will be
   	E.	All of the above
   	F.	None of the above

2.22222 points

QUESTION 20

1. In hypothesis testing, if the p-value is lower than alpha, then

   	A.	You should not accept the alternative hypothesis
   	B.	The probability of committing type 1 error is higher than you are willing to accept
   	C.	There is a strong probability of committing type 2 error if you reject the null hypothesis
   	D.	You should increase the sample size
   	E.	All of the above
   	F.	None of the above

2.22222 points

QUESTION 21

1. If two options are mutually exclusive and collectively exhaustive, and you have sufficient evidence to conclude that one of the options is probably false, then

   	A.	You may provisionally accept the remaining option as being probably true
   	B.	You may not make any decisions due to a lack of certainty
   	C.	You must continue testing until you become certain about which option is true
   	D.	You must create additional options
   	E.	All of the above
   	F.	None of the above

2.22222 points

QUESTION 22

1. If a null hypothesis can be rejected using a two-tailed test,

   	A.	You are less confident than if you had used a one-tailed test
   	B.	You are more likely to commit type 1 error
   	C.	It can be rejected using a one-tailed test
   	D.	It cannot be rejected using a one-tailed test
   	E.	All of the above
   	F.	None of the above

2.22222 points

QUESTION 23

1. If the probability of event X occurring is the same as the probability of event X occurring given that event Y has already occurred, then

   	A.	Event Y is dependent on event X occurring
   	B.	Events X and Y dependent
   	C.	Event X has no effect on the probability of event Y occurring
   	D.	Event Y has no effect on the probability of event X occurring
   	E.	All of the above
   	F.	None of the above

2.22222 points

QUESTION 24

1. When using the p-value method in a two-tail hypothesis test of means or proportions, it is standard to double the probablility associated with the test statistic to obtain the p-value and then compare that p-value to alpha. An alternative, non-standard, but also correct method would be to

   	A.	No alternative methods will work
   	B.	Use the same p-value as you would for a one-tail test and compare it to alpha times 2
   	C.	Use the same p-value as you would for a one-tail test and compare it to one-half of alpha
   	D.	Use the probability associated with the critical value as the p-value and compare that to alpha
   	E.	All of the above
   	F.	None of the above

2.22222 points

QUESTION 25

1. If using a single backup station to increase the reliability for a system of stations, each of which must work in succession for the system to work, it is best to add the backup station

   	A.	It does not matter to which station, they will all lead to the same system reliability
   	B.	To the station with the lowest initial reliability
   	C.	To the first station
   	D.	To the last station
   	E.	All of the above
   	F.	None of the above

2.22222 points

QUESTION 26

1. Because important information can be hidden within averages,

   	A.	You should use means instead of averages
   	B.	It is important to also analyze the variability and shape of the data set
   	C.	You may conclude that medians are inaccurate
   	D.	You may conclude that descriptive statistics are not useful
   	E.	All of the above
   	F.	None of the above

2.22222 points

QUESTION 27

1. To convert a proper Likert scale from a generator of interval data to a generator of ratio data, you could

   	A.	Increase the number of options from five to 10
   	B.	Change the number of options to an even number
   	C.	Add a zero to the scale
   	D.	Add a zero to the scale and change the instructions to indicate that zero represents the absence of agreement and that the maximum value represents complete agreement
   	E.	All of the above
   	F.	None of the above

2.22222 points

QUESTION 28

1. Because tests for the significance of coefficients in regression use two-tail hypothesis tests, which are less powerful than one-tail tests, it might be a good idea to

   	A.	This is a moot point because coefficient significance is not really important
   	B.	Whine and complain about it to your work colleagues
   	C.	Live with a less powerful test for significance
   	D.	Cut the p-value in half, or compare it to alpha times 2 to increase the test's power
   	E.	All of the above
   	F.	None of the above

2.22222 points

QUESTION 29

1. Excel has a square root function, but not an "nth root" function so, how can you use Excel to find the (n - 3) root of x?

   	A.	It cannot be done in Excel
   	B.	Rename your hand-held math calculator "Excel" and then use your hand-held calculator
   	C.	Take the square root n - 3 times
   	D.	Raise x to the (1/(n-3)) power
   	E.	All of the above
   	F.	None of the above

2.22222 points

QUESTION 30

1. Conditional formatting in Excel can be used for

   	A.	Making data that are probabilistic appear deterministic
   	B.	Confusing the user
   	C.	Calculating cell values based on certain criteria
   	D.	Analyzing large data sets for the presence of data that meet one or more criteria
   	E.	All of the above
   	F.	None of the above