Question

A hospital director is told that 21 % of the treated patients are uninsured. The director wants to test the claim that the percentage of uninsured patients is above the expected percentage. A sample of 200 patients found that 50 were uninsured. At the 0.05 level, is there enough evidence to support the director's claim? Step 3 of 7: Specify if the test is one tailed or two-tailed. Answer 2 Points Tables Keypad One-Tailed Test Two-Tailed Test

Answer 1

Given: n=200 n=200 X = 50 q= 0.05 X = Uninsured. Ho: P = 0.21 HP 7 0.21 Å=0 50 200 P=0.25 0 one-Tailed Test. level of significance q=0.05 0.25-0.27 Test statistic z = Р-Р 89 0.21 x 0.79 200 2= 0.04 0-0288 2= 1.3889 P-vame = P (2) Zcal) = P(Z > 1.3889) 0.0838 [p-value By using statistral table. P-value xa then Reject to 0.0838 7 0.05 then accept Ho There is not sufficient evidence to support the claim that the percentage of Uninsured pattents is above 21.4. If you statisfied, then like my Answer.