Which one is the right choice?

> Moving to another question will save this response. Question 2 >> Express the null hypothesis and the alternative hypothesis in symbolic form. Use the correct symbol (j, p, s) for the indicated parameter. 1 points Save Answer The manufacturer of a refrigerator system for beer kegs produces refrigerators that are supposed to maintain a true mean temperature, u, of 43 F, ideal for a certain type of German pilsner. The owner of the brewery does not agree with the refrigerator manufacturer, and claims he can prove that the true mean temperature is incorrect. Ho: H = 43 H1: u # 43 O Ho: U 2 43 H1: H 43' >Question 8 p2. Find the critical value(s) for this hypothesis test. Do the data provide sufficient evidence that a greater proportion of those with a college education are satisfied in their College Education No College Education Number in sample 143 133 Number satisfied in their work 71 66 O z = 1 1.96, no O z =-1.645; yes z = 1 645; no z = 1.96, yesve this response. Question 7 1 points Solve the problem. Save Answ The table shows the number of pitchers with E.R.A's below 3.5 in a random sample of sixty pitchers from the National League and in a random sample of fifty-two pitchers from the American League. Assume that you plan to use a significance level of a = 0.05 to test the claim that p1 * p2. Find the critical value(s) for this hypothesis test. Do the data support the claim that the proportion of National League pitchers with an E.R.A. below 3.5 differs from the proportion of American League pitchers with an E.R.A. below 3.5? National League American League Number of pitchers in sample 60 52 Number of pitchers with E. R. A. below 3.5 10 10 O z = 12.575; no O z = 1.645; yes O z = 1 1.645; yes O z = 1 1.96, no A Moving to another question will save this response