I just need help with the questions with an x next to them

Let x be a random variable that represents the percentage of successful free throws a professional basketball player mab n = 6 professional basketball players gave the following Information. season. x 67 y 42 39 75 86 a) Verify that Ex = 438, Ly = 275, Ex? = 32264, Ey = 12727, Exy = 20231, and / = 0.827. Ex 438 Ey 275 Ex 32264 Ey2 12727 Exy 20231 0.827 (b) Use a 5% level of significance to test the claim that p > 0. (Round your answers to two decimal places.) 1 3.28 * > critical t 2 13 Conclusion @ Reject the null hypothesis, there is sufficient evidence that p > 0. O Reject the null hypothesis, there is Insufficient evidence that p > D. O Fall to reject the null hypothesis, there Is Insufficient evidence that p > 0. O Fail to reject the null hypothesis, there is sufficient evidence that p > o_ (c) verify that S - 3.1191, a - 6.564, b = 0.5379, and x - 73.000_ S 3 1191 8 6.564 6 0 5379 73 d) Find the predicted percentage y of successful field goals for a player with x = 77% successful free throws. (Round your answer to two decimal places.) 47.99 e) Find a 90% confidence Interval for y when x = 77. (Round your answers to one decimal place.) lower limit 45.2 upper limit 50.8 x % (f) Use a 5% level of significance to test the claim that /3 > 0. (Round your answers to two decimal places ) 1 2.94 critical t 2 13 Conclusion A 1 Us 9:02 O O Y