![iamasia06](/avatars/26030.jpg)
iamasia06
11.02.2020 •
Mathematics
In a quality control test of parts manufactured at Dabco Corporation, an engineer sampled parts produced on the first, second, and third shifts. The research study was designed to determine if the population proportion of good parts was the same for all three shifts. Sample data follow.
Production Shift
Quality first second third
Good 285 368 176
Defective 15 32 24
A. Using a .05 level of significance, conduct a hypothesis test to determine if the population proportion of good parts is the same for all three shifts. What is the p-value and what is your conclusion?
B. If the conclusion is that the population proportions are not all equal, use a multiple comparison procedure to determine how the shifts differ in terms of quality. What shift or shifts need to improve the quality of parts produced?
Solved
Show answers
More tips
- C Computers and Internet How to Format Your C Drive: Detailed Guide and Tips...
- F Food and Cooking How to Properly Cook Buckwheat?...
- F Food and Cooking How Many Grams Are In a Tablespoon?...
- L Leisure and Entertainment Carving: History and Techniques for Creating Vegetable and Fruit Decorations...
- P Photography and Videography How to Choose the Perfect Photo Paper for Your Images?...
- H Health and Medicine What vaccines do children need?...
- H Health and Medicine Reasons for the Appearance of Warts: Everything You Need to Know...
- A Art and Culture How to Learn Screaming: Step-by-Step Guide for Beginners...
- H Health and Medicine Contraceptive Pills After 35: The Importance Of Choosing The Right Medication...
- C Computers and Internet How to Choose a Monitor?...
Answers on questions: Mathematics
- M Mathematics Tune-up is considered to be part of a routine...
- M Mathematics Calculate the exact solution to the Cauchy problem when c = 2, the initial displacement is f(x) = 0, and the initial velocity is g(x)=1/(1 + 0.25x2). Plot the solution...
- M Mathematics Write a system of linear equations that has the ordered pair (1,6) as its solution....
- M Mathematics SOMEONE HELP ME PLEASE I NEED AN EXPLANATION A GOOD ONE AND ANSWER Find the length of MK if JK=36, JL=48, and JN=60....
- M Mathematics Plz help in ASAP I need it I will give you BRAINLEIST whatevrr it is called...
- M Mathematics 9x^3+6x^2-24x-25÷3x+5...
- M Mathematics Genevieve wants to verify that 1/5 * (5x - 20) - 1/2 * (4x - 8) equivalent to -x which procedure can Genevieve to determine if the two expressions are equivalent?...
- M Mathematics Can someone help me with number 3 and 4 plz!:(...
- M Mathematics Suppose that you randomly select freshman from the study until you find one who replies yes. You are interested in the number of freshmen you must ask. What is the...
- M Mathematics A 2.7 kgkg ball is thrown upward with an initial speed of 20.0 m/sm/s from the edge of a 45.0-mm-high cliff. At the instant the ball is thrown, a woman starts running...
Ответ:
p value = 0.0174
Conclusion : we reject the null hypothesis
Step-by-step explanation:
Thinking step:
We need to perform a test to determine if the proportion of the good parts is the same for all three shifts at a significance level of![\alpha = 0.05](/tpl/images/0505/8745/246a1.png)
Assumption : all the population for each or the three shifts is not equal.
Calculation:
Let p₁ be the sample of the first shift
p₂ be the sample of the second shift
p₃ be the sample of the third shift
According to the null hypothesis
H₀ = p₁ = p₂ = p₃
In other words, all the population sample proportions are equal.
Alternatively, we can assume that the three shift are not equal p₁ ≠ p₂ ≠ p₃
Tabulating and performing the
² test gives 8.10
degrees of freedom:
df = k - 1
= 3 - 1 = 2
Thus the degree of freedom is 2
Solving using the MINITAB software gives: p = 0.174
The solution shows that the p value < level of significance, then p-value lies in the range 0.0174≤
≤0.05
Therefore, we reject the null hypothesis based on the fact that the three shifts are not equal.
Ответ:
is -8
Step-by-step explanation:
is -8 my man I got you it's okay