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Manuals/calci/CHITEST (view source)
Revision as of 05:53, 26 November 2013
, 05:53, 26 November 2013→Examples
==Examples==
==Examples==
A student investigated the chance of getting viral fever for a period of a school that took vitamin tablets every day.
A student investigated the chance of getting viral fever for a period of a school that took vitamin tablets every day.
A student investigated whether taking vitamin tablets every day for a school term affected peoples chances of getting a Viral fever during the period. The total number of students 880. In that 639 students didn't get viral fever and 241 students got fever .But the expected ratio is 1:3
A student investigated whether taking vitamin tablets every day for a school term affected peoples chances of getting a Viral fever during the period. The total number of students 880. In that 639 students didn't get viral fever and 241 students got fever .But the expected ratio is 1:3<br/>
Answer
'''Answer'''
If the ratio is 1:3 and the total number of observed individuals is 880, then the expected numerical values should be 660 didn't get and 220 students will get that fever.
If the ratio is 1:3 and the total number of observed individuals is 880, then the expected numerical values should be 660 didn't get and 220 students will get that fever.