Past experience has indicated that the breaking strength of yarn used in manufacturing drapery material is...

Question

Question

Past experience has indicated that the breaking strength of yarn used in manufacturing drapery material is normally distribut

math Statistics-And-Probability

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

Solution :- given that, Ž= gq psi 6 = 2 psi is At 95% confidence level the z 2-)- 95% x= 1-0.95 a= 0.05 42 = 0.025 Z42= 20.02

Add a comment

Answer 2

Similar Homework Help Questions

Past experience has indicated that the breaking strength of yarn used in manufacturing drapery material is...

Past experience has indicated that the breaking strength of yarn used in manufacturing drapery material is normally distributed and that σ = 7.2 psi. A random sample of nine specimens is tested, and the average breaking strength is found to be 95.5 psi. The 95% confidence interval for the true mean breaking strength is written as (A ; B). Find the value of B? round your answer to three digits.
Question 7 The mean breaking strength of yarn used in manufacturing drapery material is required to...

Question 7 The mean breaking strength of yarn used in manufacturing drapery material is required to be more than 100 psi. Past experience has indicated that the standard deviation of breaking strength is 2.9 psi. A random sample of 9 specimens is tested, and the average breaking strength is found to be 100.6 psi. Statistical Tables and Charts (a) Calculate the P-value. Round your answer to 3 decimal places (e.g. 98.765). If a = 0.05, should the fiber be judged...
QUESTION 9 1 points Save Answer Past experience has indicated that the breaking strength of yarn...

QUESTION 9 1 points Save Answer Past experience has indicated that the breaking strength of yarn used in manufacturing drapery material is normally distributed and that ơ-6.2 psi A randorm sample of nine specimens is tested, and the average breaking strength s found to be 7 psi The 95% confidence interval for the truc mean breaking strength is written as (A ; B). Find the value of A? round your answer to three digits. QUESTION 10 1 points Save Answer...

Previous experience has shown that the breaking strength of the fabric used in a certain brand...

Previous experience has shown that the breaking strength of the fabric used in a certain brand of drapes is normally distributed with a standard deviation of 2 pounds per square inch. A random sample of 25 specimens is examined to reveal an average breaking strength of a 98 pounds per square inch. Determine the p-value required to test the hypothesis that the true mean is not 97 A. 0.067 B. 0.012 C. 0.13 D. 0.006 E. none of the preceding
Previous experience has shown that the breaking strength of the fabric used in a certain brand...

Previous experience has shown that the breaking strength of the fabric used in a certain brand of drapes is normally distributed with a standard deviation of 2 pounds per square inch. A random sample of 25 specimens is examined to reveal an average breaking strength of 1 = 98 pounds per square inch. Determine the p-value required to test the hypothesis that the true mean is not 97. A. 0.067 B. 0.012 C. 0.13 D. 0.006 E. none of the...
Assume that the fracture resistance of a wire used in the manufacture of drapery is normally...

Assume that the fracture resistance of a wire used in the manufacture of drapery is normally distributed with 2 = 2. A random sample of 25 specimens have been examined and they yielded a mean resistance of x = 98 psi. Give a 95% confidence interval for the mean resistance. A. [97.216,98.784] B. [97.216,98.554] C. [97.456,98.784] D. [97.446,98.554] E. none of the preceding Assume that the fracture resistance of a wire used in the manufacture of drapery is normally distributed...

4. Multiple Choice Question Previous experience has shown that the breaking strength of the fabric used...

4. Multiple Choice Question Previous experience has shown that the breaking strength of the fabric used in a certain brand of drapes is normally distributed with with a mean of 97 pounds per square inch. A random sample of 9 specimens is examined to reveal an average breaking strength of 7 = 98 pounds per square inch and a standard deviation of 2 pounds per square inch are observed. The p-value to test the hypothesis that the true mean is...
Multiple Choice Question Previous experience has shown that the breaking strength of the fabric used in...

Multiple Choice Question Previous experience has shown that the breaking strength of the fabric used in a certain brand of drapes is normally distributed with a standard deviation of 2 pounds per square inch. A random sample of 9 specimens is examined to reveal an average breaking strength of 98 pounds per square inch. Determine the p-value required to test the hypothesis that the true mean exceeds 97. - A. 0.067 B. 0.012 C. 0.13 D. 0.006 E. none of...
Assume that the fracture resistance of a wire used in the manufacture of drapery is normally...

Assume that the fracture resistance of a wire used in the manufacture of drapery is normally distributed with o2 = 2. A random sample of 25 specimens have been examined and they yielded a mean resistance of = 98 psi. Give a 95% confidence interval for the mean resistance. A. [97.216,98.784] B. (97.216,98.554] C. (97.456,98.784] D. (97.446,98.554] E. none of the preceding

An engineer studying the tensile strength of a composite material knows that tensile strength is approximately...

An engineer studying the tensile strength of a composite material knows that tensile strength is approximately normally distributed with σ = 60 psi. A random sample of 20 specimens has a mean tensile strength of 3450 psi. (a) Test the hypothesis that the mean tensile strength is 3500 psi, using α = 0.01 (b) What is the smallest level of significance at which you would be willing to reject the null hypothesis? (c) What is the β error for the...

Past experience has indicated that the breaking strength of yarn used in manufacturing drapery material is...

Homework Answers