1.The US justice system considers an accused person innocent until proven guilty and there has to...

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1.The US justice system considers an accused person innocentuntil proven guilty and there has to be proof beyond a reasonabledoubt to convict the accused. In recent years, several individualshave been released from prison because new DNA tests proved theminnocent. When the court originally convicted them (falsely as itturns out): (check all that apply)
a.
They committed a type-II error
b.
They committed both a type-I and a type-II error
c.
They committed a type-I error
d.
They committed neither a type-I nor a type-II error
2.In hypothesis testing, a Type 2 error occurs when (check allthat apply)
a.
The null hypothesis is not rejected when the null hypothesis istrue.
b.
The null hypothesis is rejected when the alternative hypothesisis true.
c.
The null hypothesis is not rejected when the alternativehypothesis is true.
d.
The null hypothesis is rejected when the null hypothesis istrue.
3.Null and alternative hypotheses are statements about: (checkall that apply)
a.
population parameters.
b.
sample parameters.
c.
sample statistics.
d.
it depends - sometimes population parameters and sometimessample statistics.

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4.4 Ratings (945 Votes)

1Answer is c They committed type 1 error Note Type 1 error is the error of rejecting a true nullhypothesisType 2 error is the error of accepting a false See Answer

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	a.	They committed a type-II error
	b.	They committed both a type-I and a type-II error
	c.	They committed a type-I error
	d.	They committed neither a type-I nor a type-II error

	a.	The null hypothesis is not rejected when the null hypothesis istrue.
	b.	The null hypothesis is rejected when the alternative hypothesisis true.
	c.	The null hypothesis is not rejected when the alternativehypothesis is true.
	d.	The null hypothesis is rejected when the null hypothesis istrue.

	a.	population parameters.
	b.	sample parameters.
	c.	sample statistics.
	d.	it depends - sometimes population parameters and sometimessample statistics.