Using the critical value approach, test the hypotheses H_0 T-Printing Inc. purch
ID: 903345 • Letter: U
Question
Using the critical value approach, test the hypotheses H_0 T-Printing Inc. purchases plastic cups on which to print logos for sporting events, proms, birthdays, a other special occasions. The owner received a large shipment this morning. To ensure the quality of shipment, he selected a random sample of 300 cups. He found 16 to be defective, What is the estimated proportion defective in the population? Develop a 95% confidence interval for the proportion defective. The owner has an agreement with his supplier that he is to return lots that are 8% or more defect. Should he return this lot? Explain your decision.Explanation / Answer
Given [H+] = 0.00095
we know [H+][OH-] = 1*10^-14 at 25^0C
[OH-] = 1*10^-14/0.00095 = 1.052*10^-11
Ph = -log[H+] = -log[0.00095] = 3.02
Poh = 14 - Ph = 14 - 3.02 = 10.98
............................................................................................................................
Given [OH-] = 6.3*10^-12
we know [H+][OH-] = 1*10^-14 at 25^0C
[H+] = 1*10^-14/6.3*10^-12 = 1.59*10^-3
Ph = -log[H+] = -log[0.00159] = 2.8
Poh = 14 - Ph = 14 - 2.8 = 11.2
......................................................................................
Given Ph= 1.72
Ph = -log[H+]
[H+] = 10^(-1.72) = 0.01905 M
Poh = 14 - Ph = 14 - 1.72 = 12.28
[OH-] = 1*10^-14/0.01905 = 5.25*10^-13 M
......................................................................................
Given Poh= 12.02
Poh = -log[OH-]
[OH-] = 10^(-12.02) = 9.55*10^-13 M
Ph = 14 - Poh = 14 - 12.02 = 1.98
[H+] = 1*10^-14/9.55*10^-13 = 0.001047 M
...........................................
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.