Engineering, 26.09.2019 17:10 lrich20200

The mean breaking strength of yarn used in manufacturing drapery material is required to be at least 100 psi. past experience has indicated that the standard deviation of breaking strength is 2.8 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 alpha equals 0.05, should the fiber be judged acceptable? the tolerance is +/-2% (b) what is the probability of not rejecting the null hypothesis at alpha ⁢ equals 0.05 if the fiber has a true mean breaking strength of 102 psi? round your answer to 3 decimal places (e. g. 98.765). the tolerance is +/-2% (c) find a 95% one-sided lower confidence interval bound on the true mean breaking strength. round your answer to three decimal place (e. g. 98.765). the tolerance is +/-2% (d) use the confidence interval found in part (c) to test the hypothesis upper h subscript 0. (e) what sample size is required to detect a true mean breaking strength of 101 with probability 0.95?

Answers: 1

Show answers

Another question on Engineering

Engineering, 04.07.2019 18:10

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.

Answers: 1

Answer

Engineering, 04.07.2019 18:10

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

Answers: 3

Answer

Engineering, 04.07.2019 18:10

Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.

Answers: 3

Answer

Engineering, 04.07.2019 18:10

Which one from below is not one of the reasons of planning failures? (clo3) a)-planner is careless. b-planner spend less time in the field but more time on the desk c)-planner is not qualified d)-planner does not have sufficient time to properly plan

Answers: 3

Answer

You know the right answer?

The mean breaking strength of yarn used in manufacturing drapery material is required to be at least...

Questions