Question 1 of 2
Four tasters evaluated the sweetness of five products on a scale from 0 to 10 with the following results:
|Product||taster 1||taster 2||taster 3||taster 4|
The critical value for the usual test of the hypothesis that there is no difference between the five products when data is assumed to be normal and $\alpha = 5\%$ is:
Question 2 of 2
The so-called cell-number in a sample of milk expresses the degree of inflammation of the udder (mastitis). The logarithm of the cell-number was observed in samples of milk taken from 166 sheep (one sample per sheep) from a total of 3 herds. The average cell-number in all 166 sheep was 4.896. The following table shows some basic numbers for the calculations.
|Herd||Number of sheep||Mean||Standard deviation|
The usual test statistic for testing if there is a difference in the level of cell-number in the three herds is: