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Draw the probability distribution curve and label all values Lightning Speed manufactures carbon fiber composite tubing...

Draw the probability distribution curve and label all values

Lightning Speed manufactures carbon fiber composite tubing for bicycles. This is a mature process and the population mean for their tubing’s strength is known to be 318 hundred pounds per square inch (k lbs) and the population standard deviation is known to be 20 k lbs.

If 30 pieces of tubing are sampled and tested, what is the probability the sample mean is greater than 320 k lbs?

Math   Statistics-And-Probability   
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Draw the probability distribution curve and label all values Lightning Speed manufactures carbon fiber composite tubing...
Draw the probability distribution curve and label all values Lightning Speed manufactures carbon fiber composite tubing for bicycles. This is a mature process and the population mean for their tubing’s strength is known to be 318 hundred pounds per square inch (k lbs) and the population standard deviation is known to be 20 k lbs. Use of the standard normal distribution table requires the sampling distribution of the mean to be normally distributed.   If the population is not known to...
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