Question

Please help. This is urgent!

In a study of the accuracy of fast food drive-through orders, one restaurant had 36 orders that were not accurate among 317 orders observed. Use a 0.01 significance level to test the claim that the rate of inaccurate orders is equal to 10. Does the accuracy rate appear to be acceptable? Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p=0.1 Hp 0.1 OB. Hyp#01 HD=0.1 Oc. Hy p=0.1 HP<0.1 OD. Hop01 Hyp>0.1

Answer 1

n Ane We have to dest the claim that the rate of inaccurate orders is equal to 10') at x = 0.01 The null and alternative hypotheses are Hoi p=0.10 US Hi' P 30.10 Option (M) is correct The test statistic in z = р- Р "N(0) under Ho PU-P) where for n=317 orders, 8 = 36 36 & 0.1136 317 So 0:1136-0,10 Z- 0.8071 Olx0,9 317 so the test statistic is z=0.81 The p-value in P-value = P(Z <-0.81] + P[270.01] 2 (1-5(0.81)) - 2 (1-0.791) = 2 x 0.209 = 0-418 So p-value = 0.418 Conclusion since p-value is greater than d20.01, so we fail to reject Ho. There is not sufficient evidence to warrant rejection of claim that rate of inaccurate is equal to 100% Option (c) is correct.

Does the accuracy rate appear to be acceptable? (o since there is not sufficient enidence to reject the clair that rate of inaccurate order in 10%.9t in plamible that the inaccuracy rate is 10.1. This rute would be too high the restaurant should work to lower the safe.