20122013 CBA4_1

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Bill Foster

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6 years, 5 months ago

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Bill Foster 6 years, 5 months ago

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Newcastle University Mathematics and Statistics 9 years, 3 months ago

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Question statement

Use statistics tables or R to find the following:

Give any introductory information the student needs.

			Name	Type	Generated Value

p2	number	0.001
p3	number	0.025
p1	number	0.99
v1	number	2.602
u1	integer	7
per	list	List of 11 items
u2	integer	9
tn	integer	24
p	list	List of 10 items
v2	number	3.467
tm	integer	29
t	integer	15
u3	integer	6
v3	number	2.045

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
precround(1-p[u2-1],3)

JME function reference

Description

Describe what this variable represents, and list any assumptions made about its value.

Can an exam override the value of this variable?

Generated value: `number`

0.001

← Depends on:

This variable doesn't seem to be used anywhere.

Parts

Part a) Gap-fill
1. Gap Number entry
  Add
Part b) Gap-fill
1. Gap Number entry
  Add
Part c) Gap-fill
1. Gap Number entry
  Add

Gap-fill

Ask the student a question, and give any hints about how they should answer this part.

$\operatorname{P}(T \lt \var{v1})$ where $T \sim t_{\var{t}}$

$\operatorname{P}(T \lt \var{v1})=\;$ ?Unnamed gap

Advice

We have to find $\operatorname{P}(T \lt \var{v1})$ where $T \sim t_{\var{t}}$.

Looking at the tables for degrees of freedom $\var{t}$ ,

{table([cr(t)],per)} we see that the value $\var{v1}$ corresponds to the $\var{p1}$ critical point, and since the tables are one sided we see that $\operatorname{P}(T \lt \var{v1})=\var{p1}$

We have to find $\operatorname{P}(T \lt \var{-v2})$ where $T \sim t_{\var{tn}}$. Looking at the table for degrees of freedom $\var{tn}$ ,

{table([cr(tn)],per)} we see that since the tables are one sided,

$\operatorname{P}(T \lt \var{-v2})=\operatorname{P}(T \gt \var{v2})=1-\operatorname{P}(T \lt \var{v2})=1-\var{precround(1-p2,3)}=\var{p2}$

We have to find $\operatorname{P}(T \gt \var{v3})$ where $T \sim t_{\var{tm}}$. Looking at the table for degrees of freedom $\var{tm}$ ,

{table([cr(tm)],per)} we see that since the tables are one sided,

$\operatorname{P}(T \gt \var{v3})=1-\operatorname{P}(T \lt \var{v3})=1-\var{precround(1-p3,3)}=\var{p3}$

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Part	Test	Passed?
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Gap-fill		Hasn't run yet
Number entry
Number entry		Hasn't run yet
Gap-fill
Gap-fill		Hasn't run yet
Number entry
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Gap-fill
Gap-fill		Hasn't run yet
Number entry
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This question is used in the following exam:

Statistical inference by Newcastle University Mathematics and Statistics in Content created by Newcastle University.

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Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

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Checkpoint description

Bill Foster 6 years, 5 months ago

Newcastle University Mathematics and Statistics 9 years, 3 months ago

Error in variable testing condition

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Generated value: `number`

Parts

Gap-fill

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20122013 CBA4_1

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Bill Foster 6 years, 5 months ago

Newcastle University Mathematics and Statistics 9 years, 3 months ago

Error in variable testing condition

Error

Warning

Generated value: number

Parts

Gap-fill

Generated value: `number`