I did something wrong on part A can someone find my error and help me. 100 parts

Question

I did something wrong on part A can someone find my error and help me.

100 parts made from alloy 1 and 50 parts made from alloy 2 were subjected to stress tests. 18 parts from alloy 1 and 13 parts from alloy 2 did not pass the test. Can we reject the hypothesis that the proportion of nonpassing parts from alloy 1 is at least as large as the proportion of nonpassing parts from alloy 2 at alpha = 0.025? Assume independent samples. For the hypothesis stated above (in terms of alloy1 - alloy2): What is the decision rule? Fill in only one of the following statements. If the hypothesis is one tailed: If the hypothesis is two tailed: Part B What is the test statistic? Find the 99% confidence interval (in terms of alloy2 - alloy1).

Explanation / Answer

as it can be as large as proportion hence rejection should be Z <-1.96

please check and reply back.

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.