1) For some Food which seemed contaminated, you made four independent measurements to see if there is a certain poison, because you work for the CDC. The legally forbidden level is 2 20. So, as soon as there is 20 or more it is considered illegal. You found, X1 =18,X2 =16,X3 =18,X4 = 20. This measurements are from the same batch of food, but the differences are due to measurement imprecision. However we assume the measurement error to have expectation U. The precision of your measurements is ox, = 2. Test on the 1% signicance level, the Hypothesis, that there is 20 or more unites of the poison in that food. a) What is the pvalue? b) Can you reject the hypothesis on the 1%level? \fQuestion 1b 0 We reject on 1% level 0 undetermined O No answer text provided. 0 we don't reject on 1% level