applying chi square test:
Observed | Oi | A | B | C | D | Total |
male | 47 | 42 | 47 | 37 | 173 | |
female | 43 | 48 | 38 | 46 | 175 | |
Total | 90 | 90 | 85 | 83 | 348 | |
Expected | Ei=row total*column total/grand total | A | B | C | D | Total |
male | 44.74 | 44.74 | 42.26 | 41.26 | 173 | |
female | 45.26 | 45.26 | 42.74 | 41.74 | 175 | |
Total | 90 | 90 | 85 | 83 | 348 | |
chi square χ2 | =(Oi-Ei)2/Ei | A | B | C | D | Total |
male | 0.1140 | 0.1680 | 0.5327 | 0.4401 | 1.255 | |
female | 0.1127 | 0.1660 | 0.5266 | 0.4351 | 1.240 | |
Total | 0.227 | 0.334 | 1.059 | 0.875 | 2.495 |
from above test statistic =2.495
p value =0.4762
A certain enzyme in the liver of fish is considered an indicator of trace amounts of a dangerous pollutant that is difficult to detect by chemical methods. Enzyme activities of less than 50 units per gram of liver (fresh weight) are taken to indicate the presence of the pollutant. A random sample was taken from a local stream and the enzyme concentrations were as follows. 48 43 51 42 50 42 44 45 56 49 44 47 50 49 38...
Typing speeds of 10 individuals 1 Person New method 48 53 43 37 52 40 38 3253 47 Traditiona 40 45 37 27 43 40 423947 38 1 2 3456 789 10 Print Done We were unable to transcribe this image
R code and answer questions please A certain enzyme in the liver of fish is considered an indicator of trace amounts of a dangerous pollutant that is difficult to detect by chemical methods. Enzyme activities of less than 50 units per gram of liver (fresh weight) are taken to indicate the presence of the pollutant. A random sample was taken from a local stream and the enzyme concentrations were as follows 48 43 51 42 50 42 44 45 56...
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