Hi there

Consider the following contingency table: Disease No disease Risk factor 16 4 No risk factor 14 6 Calculate and enter the expected values if the variable risk factor and disease are independent. Disease No disease Risk factor Number Number No risk factor Number NumberConsider a multivariate random variable (X1,X2,X3) with parameters 71-1 : 0.3; #2 : 0.3; 7T3 20.4; and N : 50 Calculate the following: (a) E[X1] : ' Number \\ w 2 {C} COV(X1,X2) : A six-sided die is rolled, and the following results are obtained: Value N W 4 6 Frequency 10 11 1 3 26 (a) Which is the correct null hypothesis to test if the die is fair? O HO : T = (1/6, 1/6, 1/6, 1/6, 1/6, 1/6) O HO : T # (1/6, 1/6, 1/6, 1/6, 1/6, 1/6) O HO : 71 + 72 + 73 + 74+ 75 + 76=1 O Ho : y1 + 92 + 93 + 94 + 95 + 96 = n (b) Calculate the value of the test statistic: Number (c) What distribution should you use to calculate the P-value? standard normal O multinomial O Chi-squared O T-distribution (d) Calculate the degrees of freedom: Number