### Confidence interval for the population mean concentration

Assignment Help Basic Statistics
##### Reference no: EM132184472

1. A beverage dispensing machine is calibrated so that the amount of beverage dispensed is approximately normally distributed with a population standard deviation of 0.15 deciliters.Construct a 90% confidence interval for the population mean amount of beverage dispensed by this machine based on a random sample of 36 drinks dispensing an average of 2.25 dl. Show all steps as given in the class handout.

2. Overproduction of uric acid in the body can be an indication of cell breakdown. This may be an advance indication of illness such as gout, leukemia, or lymphoma. Over a period of months, an adult male patient has taken eight blood tests for uric acid. The mean concentration was 5.35mg/dl. The distribution of uric acid in healthy adult males can be assumed to be normal, with population standard deviation 1.85mg/dl. Construct a 95% confidence interval for the population mean concentration of uric acid in this patient's blood. Show all steps as given in the class handout.

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