The shear strength of each of ten test spot welds is determined, yielding the following data (psi):375 377 384 388 409 362 358 415367 389Suppose we decide to examine another test spot weld. Let X = shear strength of the weld. Use the given data to obtain the mle of P(X ≤400). [Hint: P(X ≤400) = ((400 -μ)/o).] (Round your answer to four decimalplaces.)

X = 367 389 375 377 384 388 409 362 358 415n=10

Answered: The shear strength of each of ten test…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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1. Question Details DevoreStat9 7.SE.506.XP. [4060976] The following observations were made on fracture toughness of a base plate of 18% nickel maraging steel (in ksi ✓in., given in increasing order)]: 65.5 71.9 72.8 73.1 73.4 73.5 75.5 75.7 75.8 76.1 76.2 76.2 77.0 77.9 78.1 79.6 79.7 79.9 80.1 82.2 83.7 93.8 Calculate a 99% CI for the standard deviation of the fracture toughness distribution. (Round your answers to one decimal place.) 3.8 8.7 ksi vin Is this interval valid whatever the nature of the distribution? Explain. O The interval is always valid. O The distribution needs to be skewed to the right. O The distribution needs to be approximately uniform. O The distribution needs to be approximately normal.
P2) The yield stress of a high-strength grade of steel is modelled as a Gumbel variate X with: x=46 ksi; Vx = 0.05 Evaluate P[X≥52 ksi | 46 ksi ≤ X ≤ 60 ksi].
Given a data set as attached xi 0.2 0.3 0.4 0.5 0.6 0.7 fi 1.0832 1.1972 1.3771 1.6487 2.0544 2.6644 Determine the approximate values of f'(0.4) and f''(0.4) using the approach of 2 point forward difference, 2 point backward difference, 3 point central difference, 3 point forward difference, and 3 point backward difference for the value of table with function f(?) = e2x^2. Which method gives an estimatethe best?
An experiment to compare the tension bond strength of polymer latex modified mortar (Portland cement mortar to which polymer latex emulsions have been added during mixing) to that of unmodified mortar resulted in x = 18.14 kgf/cm2 for the modified mortar (m 42) and y = 16.89 kgf/cm2 for the unmodified mortar (n 30). Let and be the true average tension bond strengths for the modified and unmodified mortars, respectively. Assume that the %D bond strength distributions are both normal. (a) Assuming that = 1.6 and o, 1.3, test Ho: Hy-H2 O versus H: µ, - µ, > 0 at level 0.01. Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.) Z = P-value = State the conclusion in the problem context. Fail to reject Ho. The data does not suggest that the difference in average tension bond strengths exceeds from 0. o Fail to reject Ho. The data suggests that the difference in average tension bond strengths exceeds…
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