A manufacturer knows that their items have a normally distributed length, with a mean of 6.3 inches, and standard deviation of 0.6 inches. If one item is chosen at random, what is the probability that it is less than 6.2 inches long? Round your answer to at least three decimals.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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A manufacturer knows that their items have a normally distributed length, with a mean of 6.3 inches, and
standard deviation of 0.6 inches.
If one item is chosen at random, what is the probability that it is less than 6.2 inches long?
Round your answer to at least three decimals.
Transcribed Image Text:A manufacturer knows that their items have a normally distributed length, with a mean of 6.3 inches, and standard deviation of 0.6 inches. If one item is chosen at random, what is the probability that it is less than 6.2 inches long? Round your answer to at least three decimals.
Determine the minimum required sample size if you want to be 95% confident that the sample mean is
within 14 units of the population mean given o=142.4. Assume the population is normally distributed.
What is the critical value that corresponds to a level of confidence of 95%?
Round your answer to two decimals.
What is the minimum sample size required for this problem?
Round your answer up to the next integer.
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Transcribed Image Text:Determine the minimum required sample size if you want to be 95% confident that the sample mean is within 14 units of the population mean given o=142.4. Assume the population is normally distributed. What is the critical value that corresponds to a level of confidence of 95%? Round your answer to two decimals. What is the minimum sample size required for this problem? Round your answer up to the next integer. Submit Question
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