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MATH 1213 1P Fall 2025 Intro to Statistics [Room CH230]

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Hypothesis testing is all about finding the

probability that

the

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Suppose a z-test resulted in these findings: z =

2.95, p < .05.  Which of the following

statements is

true?

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If your hypothesis was “Students get higher

grades in afternoon classes than classes in general”, and you made a Type I

error, this means you falsely concluded

that

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Consider this null hypothesis:  Children whose parents score above average in

daily stress are not more anxious than children in general.  Which of the following is the corresponding

alternative

hypothesis?

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Which kinds of comparisons can you make with a

z-test and not with other

statistics?

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Suppose a z-test resulted in these findings: z =

5.6, p < .00003.  Which of

the 

following statements

is true?

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document.styleSheets.dynCom.addRule(".msocomtxt","border-top: 1pt solid threedlightshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","border-right: 2pt solid threedshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","border-bottom: 2pt solid threedshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","border-left: 1pt solid threedlightshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","padding: 3pt 3pt 3pt 3pt");

document.styleSheets.dynCom.addRule(".msocomtxt","z-index: 100");

}

// -->

Hypothesis testing is all about finding the

probability that

the

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0%
View this question

<!--

function msoCommentShow(anchor_id, com_id)

{

if(msoBrowserCheck())

{

c = document.all(com_id);

a = document.all(anchor_id);

if (null != c && null == c.length && null != a && null == a.length)

{

var cw = c.offsetWidth;

var ch = c.offsetHeight;

var aw = a.offsetWidth;

var ah = a.offsetHeight;

var x = a.offsetLeft;

var y = a.offsetTop;

var el = a;

while (el.tagName != "BODY")

{

el = el.offsetParent;

x = x + el.offsetLeft;

y = y + el.offsetTop;

}

var bw = document.body.clientWidth;

var bh = document.body.clientHeight;

var bsl = document.body.scrollLeft;

var bst = document.body.scrollTop;

if (x + cw + ah / 2 > bw + bsl && x + aw - ah / 2 - cw >= bsl )

{ c.style.left = x + aw - ah / 2 - cw; }

else

{ c.style.left = x + ah / 2; }

if (y + ch + ah / 2 > bh + bst && y + ah / 2 - ch >= bst )

{ c.style.top = y + ah / 2 - ch; }

else

{ c.style.top = y + ah / 2; }

c.style.visibility = "visible";

} } }

function msoCommentHide(com_id)

{

if(msoBrowserCheck())

{

c = document.all(com_id);

if (null != c && null == c.length)

{

c.style.visibility = "hidden";

c.style.left = -1000;

c.style.top = -1000;

} }

}

function msoBrowserCheck()

{

ms = navigator.appVersion.indexOf("MSIE");

vers = navigator.appVersion.substring(ms + 5, ms + 6);

ie4 = (ms > 0) && (parseInt(vers) >= 4);

return ie4;

}

if (msoBrowserCheck())

{

document.styleSheets.dynCom.addRule(".msocomanchor","background: infobackground");

document.styleSheets.dynCom.addRule(".msocomoff","display: none");

document.styleSheets.dynCom.addRule(".msocomtxt","visibility: hidden");

document.styleSheets.dynCom.addRule(".msocomtxt","position: absolute");

document.styleSheets.dynCom.addRule(".msocomtxt","top: -1000");

document.styleSheets.dynCom.addRule(".msocomtxt","left: -1000");

document.styleSheets.dynCom.addRule(".msocomtxt","width: 33%");

document.styleSheets.dynCom.addRule(".msocomtxt","background: infobackground");

document.styleSheets.dynCom.addRule(".msocomtxt","color: infotext");

document.styleSheets.dynCom.addRule(".msocomtxt","border-top: 1pt solid threedlightshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","border-right: 2pt solid threedshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","border-bottom: 2pt solid threedshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","border-left: 1pt solid threedlightshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","padding: 3pt 3pt 3pt 3pt");

document.styleSheets.dynCom.addRule(".msocomtxt","z-index: 100");

}

// -->

<!--

function msoCommentShow(anchor_id, com_id)

{

if(msoBrowserCheck())

{

c = document.all(com_id);

a = document.all(anchor_id);

if (null != c && null == c.length && null != a && null == a.length)

{

var cw = c.offsetWidth;

var ch = c.offsetHeight;

var aw = a.offsetWidth;

var ah = a.offsetHeight;

var x = a.offsetLeft;

var y = a.offsetTop;

var el = a;

while (el.tagName != "BODY")

{

el = el.offsetParent;

x = x + el.offsetLeft;

y = y + el.offsetTop;

}

var bw = document.body.clientWidth;

var bh = document.body.clientHeight;

var bsl = document.body.scrollLeft;

var bst = document.body.scrollTop;

if (x + cw + ah / 2 > bw + bsl && x + aw - ah / 2 - cw >= bsl )

{ c.style.left = x + aw - ah / 2 - cw; }

else

{ c.style.left = x + ah / 2; }

if (y + ch + ah / 2 > bh + bst && y + ah / 2 - ch >= bst )

{ c.style.top = y + ah / 2 - ch; }

else

{ c.style.top = y + ah / 2; }

c.style.visibility = "visible";

} } }

function msoCommentHide(com_id)

{

if(msoBrowserCheck())

{

c = document.all(com_id);

if (null != c && null == c.length)

{

c.style.visibility = "hidden";

c.style.left = -1000;

c.style.top = -1000;

} }

}

function msoBrowserCheck()

{

ms = navigator.appVersion.indexOf("MSIE");

vers = navigator.appVersion.substring(ms + 5, ms + 6);

ie4 = (ms > 0) && (parseInt(vers) >= 4);

return ie4;

}

if (msoBrowserCheck())

{

document.styleSheets.dynCom.addRule(".msocomanchor","background: infobackground");

document.styleSheets.dynCom.addRule(".msocomoff","display: none");

document.styleSheets.dynCom.addRule(".msocomtxt","visibility: hidden");

document.styleSheets.dynCom.addRule(".msocomtxt","position: absolute");

document.styleSheets.dynCom.addRule(".msocomtxt","top: -1000");

document.styleSheets.dynCom.addRule(".msocomtxt","left: -1000");

document.styleSheets.dynCom.addRule(".msocomtxt","width: 33%");

document.styleSheets.dynCom.addRule(".msocomtxt","background: infobackground");

document.styleSheets.dynCom.addRule(".msocomtxt","color: infotext");

document.styleSheets.dynCom.addRule(".msocomtxt","border-top: 1pt solid threedlightshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","border-right: 2pt solid threedshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","border-bottom: 2pt solid threedshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","border-left: 1pt solid threedlightshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","padding: 3pt 3pt 3pt 3pt");

document.styleSheets.dynCom.addRule(".msocomtxt","z-index: 100");

}

// -->

Suppose a z-test resulted in these findings: z =

2.95, p < .05.  Which of the following

statements is

true?

0%
100%
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0%
View this question

<!--

function msoCommentShow(anchor_id, com_id)

{

if(msoBrowserCheck())

{

c = document.all(com_id);

a = document.all(anchor_id);

if (null != c && null == c.length && null != a && null == a.length)

{

var cw = c.offsetWidth;

var ch = c.offsetHeight;

var aw = a.offsetWidth;

var ah = a.offsetHeight;

var x = a.offsetLeft;

var y = a.offsetTop;

var el = a;

while (el.tagName != "BODY")

{

el = el.offsetParent;

x = x + el.offsetLeft;

y = y + el.offsetTop;

}

var bw = document.body.clientWidth;

var bh = document.body.clientHeight;

var bsl = document.body.scrollLeft;

var bst = document.body.scrollTop;

if (x + cw + ah / 2 > bw + bsl && x + aw - ah / 2 - cw >= bsl )

{ c.style.left = x + aw - ah / 2 - cw; }

else

{ c.style.left = x + ah / 2; }

if (y + ch + ah / 2 > bh + bst && y + ah / 2 - ch >= bst )

{ c.style.top = y + ah / 2 - ch; }

else

{ c.style.top = y + ah / 2; }

c.style.visibility = "visible";

} } }

function msoCommentHide(com_id)

{

if(msoBrowserCheck())

{

c = document.all(com_id);

if (null != c && null == c.length)

{

c.style.visibility = "hidden";

c.style.left = -1000;

c.style.top = -1000;

} }

}

function msoBrowserCheck()

{

ms = navigator.appVersion.indexOf("MSIE");

vers = navigator.appVersion.substring(ms + 5, ms + 6);

ie4 = (ms > 0) && (parseInt(vers) >= 4);

return ie4;

}

if (msoBrowserCheck())

{

document.styleSheets.dynCom.addRule(".msocomanchor","background: infobackground");

document.styleSheets.dynCom.addRule(".msocomoff","display: none");

document.styleSheets.dynCom.addRule(".msocomtxt","visibility: hidden");

document.styleSheets.dynCom.addRule(".msocomtxt","position: absolute");

document.styleSheets.dynCom.addRule(".msocomtxt","top: -1000");

document.styleSheets.dynCom.addRule(".msocomtxt","left: -1000");

document.styleSheets.dynCom.addRule(".msocomtxt","width: 33%");

document.styleSheets.dynCom.addRule(".msocomtxt","background: infobackground");

document.styleSheets.dynCom.addRule(".msocomtxt","color: infotext");

document.styleSheets.dynCom.addRule(".msocomtxt","border-top: 1pt solid threedlightshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","border-right: 2pt solid threedshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","border-bottom: 2pt solid threedshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","border-left: 1pt solid threedlightshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","padding: 3pt 3pt 3pt 3pt");

document.styleSheets.dynCom.addRule(".msocomtxt","z-index: 100");

}

// -->

Suppose a z-test resulted in these findings: z =

-2.50, p < .05.  Which of the

following statements is

true?

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0%
View this question

<!--

function msoCommentShow(anchor_id, com_id)

{

if(msoBrowserCheck())

{

c = document.all(com_id);

a = document.all(anchor_id);

if (null != c && null == c.length && null != a && null == a.length)

{

var cw = c.offsetWidth;

var ch = c.offsetHeight;

var aw = a.offsetWidth;

var ah = a.offsetHeight;

var x = a.offsetLeft;

var y = a.offsetTop;

var el = a;

while (el.tagName != "BODY")

{

el = el.offsetParent;

x = x + el.offsetLeft;

y = y + el.offsetTop;

}

var bw = document.body.clientWidth;

var bh = document.body.clientHeight;

var bsl = document.body.scrollLeft;

var bst = document.body.scrollTop;

if (x + cw + ah / 2 > bw + bsl && x + aw - ah / 2 - cw >= bsl )

{ c.style.left = x + aw - ah / 2 - cw; }

else

{ c.style.left = x + ah / 2; }

if (y + ch + ah / 2 > bh + bst && y + ah / 2 - ch >= bst )

{ c.style.top = y + ah / 2 - ch; }

else

{ c.style.top = y + ah / 2; }

c.style.visibility = "visible";

} } }

function msoCommentHide(com_id)

{

if(msoBrowserCheck())

{

c = document.all(com_id);

if (null != c && null == c.length)

{

c.style.visibility = "hidden";

c.style.left = -1000;

c.style.top = -1000;

} }

}

function msoBrowserCheck()

{

ms = navigator.appVersion.indexOf("MSIE");

vers = navigator.appVersion.substring(ms + 5, ms + 6);

ie4 = (ms > 0) && (parseInt(vers) >= 4);

return ie4;

}

if (msoBrowserCheck())

{

document.styleSheets.dynCom.addRule(".msocomanchor","background: infobackground");

document.styleSheets.dynCom.addRule(".msocomoff","display: none");

document.styleSheets.dynCom.addRule(".msocomtxt","visibility: hidden");

document.styleSheets.dynCom.addRule(".msocomtxt","position: absolute");

document.styleSheets.dynCom.addRule(".msocomtxt","top: -1000");

document.styleSheets.dynCom.addRule(".msocomtxt","left: -1000");

document.styleSheets.dynCom.addRule(".msocomtxt","width: 33%");

document.styleSheets.dynCom.addRule(".msocomtxt","background: infobackground");

document.styleSheets.dynCom.addRule(".msocomtxt","color: infotext");

document.styleSheets.dynCom.addRule(".msocomtxt","border-top: 1pt solid threedlightshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","border-right: 2pt solid threedshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","border-bottom: 2pt solid threedshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","border-left: 1pt solid threedlightshadow");

document.styleSheets.dynCom.addRule(".msocomtxt","padding: 3pt 3pt 3pt 3pt");

document.styleSheets.dynCom.addRule(".msocomtxt","z-index: 100");

}

// -->

A Type I error means you have

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