A production manager claims that the production process produces items with a mean weight of 1000 ml and with a standard deviation of 25ml. A market researcher wants to take a simple random sample of 100 items from this production process in order to check the production process. What is the probability that the sample mean will be within +7.5 ml of the population mean?

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A: Mean = 12.4 Standard deviation = 1.7

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A:

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.