Question

The manager of an assembly process wants to determine whether or not the number of defective...

The manager of an assembly process wants to determine whether or not the number of defective articles manufactured depends on the day of the week the articles are produced. She collected the following information. Is there sufficient evidence to reject the hypothesis that the number of defective articles is independent of the day of the week on which they are produced? Use α = 0.01.

Day of Week M Tu W Th F
Nondefective 87 92 99 96 93
Defective 11 8 3 3 9

(a) Find the test statistic. (Round your answer to two decimal places.)


(ii) Find the p-value. (Round your answer to four decimal places.)


(b) State the appropriate conclusion.

Reject the null hypothesis. There is not significant evidence that the number of defective articles is not independent to day of the week. Fail to reject the null hypothesis. There is not significant evidence that the number of defective articles is not independent to day of the week.     Fail to reject the null hypothesis. There is significant evidence that the number of defective articles is not independent to day of the week. Reject the null hypothesis. There is significant evidence that the number of defective articles is not independent to day of

Homework Answers

Answer #1

The statistical software output for this problem is :

Test statistics = 8.54

P-value = 0.0735

. Fail to reject the null hypothesis. There is not significant evidence that the number of defective articles is not independent to day of the week.    

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The manager of an assembly process wants to determine whether or not the number of defective...
The manager of an assembly process wants to determine whether or not the number of defective articles manufactured depends on the day of the week the articles are produced. She collected the following information. Is there sufficient evidence to reject the hypothesis that the number of defective articles is independent of the day of the week on which they are produced? Use α = 0.01. Day of Week M Tu W Th F Nondefective 88 94 97 98 91 Defective...
The manager of an assembly process wants to determine whether or not the number of defective...
The manager of an assembly process wants to determine whether or not the number of defective articles manufactured depends on the day of the week the articles are produced. She collected the following information. Is there sufficient evidence to reject the hypothesis that the number of defective articles is independent of the day of the week on which they are produced? Use α = 0.05. Day of Week M Tu W Th F Nondefective 86 86 95 90 91 Defective...
1A) The manager of an assembly process wants to determine whether or not the number of...
1A) The manager of an assembly process wants to determine whether or not the number of defective articles manufactured depends on the day of the week the articles are produced. She collected the following information. Is there sufficient evidence to reject the hypothesis that the number of defective articles is independent of the day of the week on which they are produced? Use α = 0.05. Day of Week M Tu W Th F Nondefective 95 95 93 94 88...
1A) The manager of an assembly process wants to determine whether or not the number of...
1A) The manager of an assembly process wants to determine whether or not the number of defective articles manufactured depends on the day of the week the articles are produced. She collected the following information. Is there sufficient evidence to reject the hypothesis that the number of defective articles is independent of the day of the week on which they are produced? Use α = 0.05. Day of Week M Tu W Th F Nondefective 90 93 86 91 88...
The following table is from a publication. The individuals in the following table have an eye...
The following table is from a publication. The individuals in the following table have an eye irritation, a nose irritation, or a throat irritation. They have only one of the three. Is there sufficient evidence to reject the hypothesis that the type of ear, nose, or throat irritation is independent of the age group at a level of significance equal to 0.05? Age (years) Type of Irritation 18-29 30-44 45-64 65 and Older Eye 435 566 366   68 Nose 923...
A group of researchers wants to examine whether taking multiple practice quizzes improve scores on tests....
A group of researchers wants to examine whether taking multiple practice quizzes improve scores on tests. They compare the exam scores for a sample of n1 = 12 students who took multiple practice quizzes with the test scores of a sample of n2 = 10 students who did not do any practice quizzes. Results of the study revealed that the practice quiz group had M1 = 95, SS1 = 52. The no quiz group had M2 = 92, SS2 =...
In a sample of 400 parts manufactured by a factory, the number of defective parts were...
In a sample of 400 parts manufactured by a factory, the number of defective parts were found to be 30. The company, however, claimed that at most 5% of their produce is defective. We wish to test the company's claim. Answer the next 3 questions. 1. Is the hypothesis: right-tailed, left tailed, or two-tailed? 2. True or False. We fail to reject the Null hypothesis at 5% level of significance. 3. True or False. We do not have enough evidence...
The following table is from a publication. The individuals in the following table have an eye...
The following table is from a publication. The individuals in the following table have an eye irritation, a nose irritation, or a throat irritation. They have only one of the three. Is there sufficient evidence to reject the hypothesis that the type of ear, nose, or throat irritation is independent of the age group at a level of significance equal to 0.05? Age (years) Type of Irritation 18-29 30-44 45-64 65 and Older Eye 444 576 334 61 Nose 907...
Two randomly selected groups of citizens were exposed to different media campaigns that dealt with the...
Two randomly selected groups of citizens were exposed to different media campaigns that dealt with the image of a political candidate. One week later, the citizen groups were surveyed to see whether they would vote for the candidate. The results were as follows. Is there sufficient evidence to show a difference in the effectiveness of the two image campaigns at the 0.05 level of significance? (Use Conservative - Moderate.) Exposed to Conservative Image    Exposed to Moderate Image Number in...
The mean number of English courses taken in a two–year time period by male and female...
The mean number of English courses taken in a two–year time period by male and female college students is believed to be about the same. An experiment is conducted and data are collected from 25 males and 13 females. The males took an average of 4 English courses with a standard deviation of 0.8. The females took an average of 2.5 English courses with a standard deviation of 1.0. Set up a hypothesis test to determine whether this difference is...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT