Suppose 4
Suppose that 14% of all steel shafts produced by a certain process are nonconforming but can be reworked (rather than having to be scrapped). Consider a random sample of 200 shafts, and let X denote the number among these that are nonconforming and can be reworked.
a) What is the probability that X is at most 30?
b) What is the probability that X is less than 30?
c) What is X's probability of being between 15 and 25 (inclusive)?
Your answer:
a) What is the probability that X is at most 30?
b) What is the probability that X is less than 30?
c) What is X's probability of being between 15 and 25 (inclusive)?
Your answer:
Showing 1 comment:
Dr Math
A - https://www.hackmath.net/en/calculator/normal-distribution?mean=28&sd=4.9071&above=&area=below&below=30.5&ll=&ul=&outsideLL=&outsideUL=&draw=Calculate
B - https://www.hackmath.net/en/calculator/normal-distribution?mean=74&sd=9.7&above=&below=&area=between&ll=64.3&ul=93.4&outsideLL=&outsideUL=&draw=Calculate
C - https://www.hackmath.net/en/calculator/normal-distribution?mean=28&sd=4.9071&above=&below=&area=between&ll=14.5&ul=25.5&outsideLL=&outsideUL=&draw=Calculate
Using continuity correction
B - https://www.hackmath.net/en/calculator/normal-distribution?mean=74&sd=9.7&above=&below=&area=between&ll=64.3&ul=93.4&outsideLL=&outsideUL=&draw=Calculate
C - https://www.hackmath.net/en/calculator/normal-distribution?mean=28&sd=4.9071&above=&below=&area=between&ll=14.5&ul=25.5&outsideLL=&outsideUL=&draw=Calculate
Using continuity correction
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statisticscombinatoricsarithmeticbasic operations and conceptsGrade of the word problem
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