An article suggested that yield strength (ksi) for A36 grade steel is normally distributed with μ = 45 and o = 5.0.USE SALT(a) What is the probability that yield strength is at most 38? Greater than 64? (Round your answers to four decimal places.)at most 38greater than 64(b) What yield strength value separates the strongest 75% from the others? (Round your answer to three decimal places.)ksiYou may need to use the appropriate table in the Appendix of Tables to answer this question.

Given that an article suggested that yield strength (ksi) for A36 grade steel is normally…

Answered: An article suggested that yield…

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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In a family with 10 children the p probability of a boy =0.5. Find the exact probability of less than 2 boys. And find the normal approximate probability of less than 2 boys. O A. Exact = 0.550, Approx = 0.570 %3D B. Exact = 0.005, Approx = 0.007 OC. Exact = 0.055, Approx = 0.057 %3D OD. Exact = 0.055, Approx = 1.0 %3D
Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is 0.4 . A sample of 37 U.S. adults is chosen. Use the TI-84 Plus Calculator as needed. Round the answer to at least four decimal places. Part: 0 / 6 0 of 6 Parts Complete Part 1 of 6 Is it appropriate to use the normal approximation to find the probability that more than 45% of the people in the sample have high blood pressure? It ▼(Choose one) appropriate to use the normal curve, since =np ▼(Choose one) 10 and =n−1p ▼(Choose one) 10 .
D E F Please
Q scores are normally distributed with μ = 100 and σ = 15. Find the IQ score separatingthe highest 4% of all scores.
For each value of z*, find the cumulative probability P(Z s z*). (Round your answers to four decimal places.) AUSE SALT (a) z* = 1.96 (b) z* =-2.33 (c) z* = 2.58 (d) z* = 1.65
Suppose the relationship between Y and X is given by: Y = 4 + 3.2*X + error By how much does the expected value of Y change if X increases by 1.29 units? (Round your answer to two decimal places: ex: 123.45)
A normal distribution has a mean of µ = 50 with σ = 30. If one score is randomly selected from this distribution, what is the probability that the score will have a value between X = 50 and X = 80? Select one: a. 0.6826 b. 0.3413 c. 0.8413 d. 0.1587
Find the value of X (Left Tailed Probability of 0.5) for v1 = 10 and v2 = 20 degrees of freedom.
You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly different from 63%. With H, :p 63% you obtain a test statistic of z = - 1.222. Find the p-value accurate to 4 decimal places. p-value =
Scores on a certain intelligence test for children between ages 13 and 15 years are approximately normally distributed with μ=96 and σ=21. (a) What proportion of children aged 13 to 15 years old have scores on this test above 86 ? (NOTE: Please enter your answer in decimal form. For example, 45.23% should be entered as 0.4523.)Answer: (b) Enter the score which marks the lowest 30 percent of the distribution.Answer: (c) Enter the score which marks the highest 15 percent of the distribution.Answer:

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