Physics, 03.07.2019 01:30 cuscuecer16

The shear strength of each of ten test spot welds is determined, yielding the following data (psi). 362 409 375 389 358 367 375 365 390 415 (a) assuming that shear strength is normally distributed, estimate the true average shear strength and standard deviation of shear strength using the method of maximum likelihood. (round your answers to two decimal places.) average psi standard deviation psi (b) again assuming a normal distribution, estimate the strength value below which 95% of all welds will have their strengths. [hint: what is the 95th percentile in terms of μ and σ? now use the invariance principle.] (round your answer to two decimal places.) psi

Answers: 1

Show answers

Another question on Physics

Physics, 22.06.2019 10:30

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.

Answers: 1

Answer

Physics, 22.06.2019 14:00

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?

Answers: 1

Answer

Physics, 22.06.2019 16:20

Which best describes what forms in nuclear fission? a. two smaller, more stable nucleib. two larger, less stable nucleic. one smaller, less stable nucleusd. one larger, more stable nucleus

Answers: 1

Answer

Physics, 22.06.2019 20:10

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?

Answers: 1

Answer

You know the right answer?

The shear strength of each of ten test spot welds is determined, yielding the following data (psi)....

Questions