Calculate probability of either of two events occurring

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Bill Foster

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Bill Foster 6 years, 1 month ago

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Newcastle University Mathematics and Statistics 9 years, 2 months ago

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Name	Status	Author	Last Modified
Calculate probability of either of two events occurring	Ready to use	Newcastle University Mathematics and Statistics	20/11/2019 14:50
Calculate probability of either of two events occurring based on frequency	Ready to use	Peter Chapman	01/06/2016 09:47
Calculate probability of either of two events occurring based on frequency v2	draft	Peter Chapman	15/02/2017 14:00
Calculate probability of either of two events occurring	draft	Xiaodan Leng	10/07/2019 22:29
Calculate probability of either of two events occurring based on frequency	Ready to use	Xiaodan Leng	24/10/2019 12:55

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Question statement

$\var{p1}$ % of {things} {desc1} {dothis}, $\var{p2}$ % {dothat} and $\var{p3}$ % {dothisandthat}.

{therest} {desc2}

Give any introductory information the student needs.

			Name	Type	Generated Value

dothisandthat	string	work on both domestic and Euro
desc4	string	is in training
p1	integer	54
desc1	string	with a small UK-based airline
dothat	string	work on European routes
desc3	string	working with this airline
things	string	stewardesses
ans2	decimal	dec("0.06")
p3	integer	20
p	integer	114
p2	integer	60
dothat1	string	works on European routes
dothis	string	work on domestic routes
therest	string	The remainder
desc2	string	are in training
thing	string	stewardess
dothis1	string	works on domestic routes
prob1	decimal	dec("0.94")

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
"work on both domestic and European routes"

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: `string`

work on both domestic and European routes

This variable doesn't seem to be used anywhere.

Parts

Gap-fill
1. Gap Gap 0. Number entry
  Add
2. Gap Gap 1. Number entry
  Add

Gap-fill

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

Find the probabilities that a randomly chosen {thing} {desc3}:

a) {dothis1} or {dothat1}.

Probability = Gap 0.

b) {desc4}.

Probability = Gap 1.

Enter both probabilities to 2 decimal places.

Advice

a) There are $\var{p1}+\var{p2}-\var{p3}=\var{p-p3}$ % of stewardesses working on one of the routes. The probability that a random stewardess is working on one of these routes is therefore $\displaystyle \frac{\var{p-p3}}{100}=\var{prob1}$ .

b) The rest are in training and the probability that a randomly selected stewardess is in training is $1-\var{prob1}=\var{1-prob1}$ .

Give a worked solution to the whole question.

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Part	Test	Passed?
Gap-fill
Gap-fill		Hasn't run yet
Number entry
Number entry		Hasn't run yet
Number entry
Number entry		Hasn't run yet

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Calculate probability of either of two events occurring

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Taxonomy: mathcentre

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Taxonomy: Context

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Checkpoint description

Bill Foster 6 years, 1 month ago

Newcastle University Mathematics and Statistics 9 years, 2 months ago

Error in variable testing condition

Error

Warning

Generated value: `string`

Parts

Gap-fill

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Error

Calculate probability of either of two events occurring

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Bill Foster 6 years, 1 month ago

Newcastle University Mathematics and Statistics 9 years, 2 months ago

Error in variable testing condition

Error

Warning

Generated value: string

Parts

Gap-fill

Generated value: `string`