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"url": "https://numbas.mathcentre.ac.uk/api/questions/11927/?format=api",
"name": "Calculate expectation and a probability from a frequency table, , , ",
"published": true,
"project": "https://numbas.mathcentre.ac.uk/api/projects/601/?format=api",
"author": {
"url": "https://numbas.mathcentre.ac.uk/api/users/697/?format=api",
"profile": "https://numbas.mathcentre.ac.uk/accounts/profile/697/?format=api",
"full_name": "Newcastle University Mathematics and Statistics",
"pk": 697,
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"edit": "https://numbas.mathcentre.ac.uk/question/11927/calculate-expectation-and-a-probability-from-a-fre/?format=api",
"preview": "https://numbas.mathcentre.ac.uk/question/11927/calculate-expectation-and-a-probability-from-a-fre/preview/?format=api",
"download": "https://numbas.mathcentre.ac.uk/question/11927/calculate-expectation-and-a-probability-from-a-fre.zip?format=api",
"source": "https://numbas.mathcentre.ac.uk/question/11927/calculate-expectation-and-a-probability-from-a-fre.exam?format=api",
"metadata": {
"notes": "<p><strong>7/07/2012:</strong></p>\n <p>Added tags.</p>\n <p>Checked calculation.</p>\n <p><strong>22/07/2012:</strong></p>\n <p>Added description.</p>\n <p>Ticked stats extension box.</p>\n <p><strong>31/07/2012:</strong></p>\n <p>Added tags.</p>\n <p>Question appears to be working correctly.</p>\n <p><strong>20/12/2012:</strong></p>\n <p>Could increase the number of scenarios by using random string variables. Query tag added for that.</p>\n <p>Also very cumbersome use of variables. But no change proposed for now.</p>\n <p>Checked calculation, OK. Added tested1 tag.</p>\n <p><strong>21/12/2012:</strong></p>\n <p>Although asks for solution to 2 dps, there is no rounding as the raw values are to 2 dps. Added sc tag for possible scenarios.</p>",
"licence": "Creative Commons Attribution 4.0 International",
"description": "<p>Given a probability mass function $P(X=i)$ with outcomes $i \\in \\{0,1,2,\\ldots 8\\}$, find the expectation $E$ and $P(X \\gt E)$.</p>"
},
"status": "ok",
"resources": []
}
