Assume that you plan to use a significance level of α = 0.05 to test the claim that p1 = p2. use the given sample sizes and numbers of successes to find the z test statistic for the hypothesis test.

n1 = 196 n2 = 189
x1 = 85 x2 = 81

Question: what is the value of x 4x-2= (-7) +5x. it would be greatly appreciated if someone could actually explain to me step by step

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1