A6 Life Time of IC Chips manufactured by a semiconductor manufacturer isapproximately normally distributed with mean = 5 × 106 hours and standarddeviation of 5 × 105 hours. A mainframe manufacturer requires that at least 95%of a batch should have a lifetime greater than 4 × 106 hours. Will the deal be%3Dтade?

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Answered: Life Time of IC Chips manufactured by a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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There is a 5% chance that the mean reading speed of a random sample of 21second grade students will exceed what value?
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a standardize exam scores are normally distributed,in a recent year,the mean test scores was 1490,standard deviation was 320,the test sscores four for studentselected at a random are;1940,1249,and 1380.Find the Zscores that correspond to each vale and determine whether any of the values are unusual
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The head of the quality department of a battery factory needs to estimate the average lifetime of a large delivery of “double A” batteries made at the factory. The standard deviation of lifetimes is known to be 100 hours. A random sample of 64 “double A” batteries results in a sample mean lifetime of 350 hours. How large a sample size is needed if we wish to be 99% confident that the mean lifetime for the entire batteries will be within +350 minutes?
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 7.1 years, and standard deviation of 2.2 years. The 8% of items with the shortest lifespan will last less than how many years? Please show your answer to one decimal place. # of years =
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The chart to the right shows that a professor's grading distribution is bell shaped, or normally shaped. The mean of the distribution is 74 and the standard deviation is 9. Using a Continuous Variable Normal Bell Distribution Model, calculate the minimum test score needed to score in the top 5% of the class. Complete your work in the worksheet by listing the formula inputs, labels for the formula inputs and make your calculations with formulas. This test problem is similar to what you studied in video # 32, 33 and 34 and homework problems # 17, 21 and 23. Relative Frequency Frequency Professor looks at all test score for a particular test (this is population data), and observes: 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Mean = 74 Median = 74 Mode = 73 SD=9 0 0 0 up to 10 up 10 to 20 0 20 up to 30 0 30 up to 40 2 40 up to 50 29 50 up to 60 X = Score 112 60 up to 70 225 70 up to 80 111 80 up to 90 21 2 90 up 100 up to 100 to 110
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