please help me figure out how to do the work on these?

Question 9 [1 point) Medical Research Laboratories claims that at least 4 out of 10 patients showed improvement from a new allergy treatment. Find the critical value(s) for a hypothesis test at the 0.10 level of significance. -1.445 -1.28 1.645 Question 10 [1 point) Medical Research Laboratories claims that at least 4 out of 10 patients showed improvement from a new allergy treatment. Find the critical value(s) for a hypothesis test at the 0.01 level of significance. O233 O-2.33 2.575 -2.575 Question 11 [1 point) Medical Research Laboratories claims that at least 4 out of 10 patients showed improvement from a new allergy treatment. Find the critical value(s) for a hypothesis test at the 0.05 level of significance. O1.445 1.96 -1.6 O-1.445 Question 12 [1 point) Assume the data has a normal distribution and the value of & is known. Find the critical value(s) for a right-tailed test of Hy with a significance level of 0.04. O-1.75 O205 -2.05 1.75 Question 13 [1 point) Assume the data has a normal distribution and the value of & is known. Find the critical value(s) for a 2-tailed test of Ho with a significance level of 0.07. 101 i1.a1 11.40 1.40Question 14 [1 point) Assume the data has a normal distribution and the value of & is known. Find the critical value(s) for a left-tailed test of H, with a significance level of 0.02. O 205 O-233 O-205 Question 15 [1 point) Assume the data has a normal distribution and the value of o is known. Find the critical value(s) for a left-tailed test of Ho with a significance level of 0.00. 141 O-1.75 O-1.41 1.75