1. The average amount you spend on a lunch during the week is not known. Based o
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Question
1. The average amount you spend on a lunch during the week is not known. Based on past experience, you are willing to assume that the standard deviation is $2.40. You take a random sample of 36 lunches, and apply the central limit theorem. Round your answer to 2 decimal places. Fill in the blank The 68-95-99.7 rule says that the probability is about 0.95 that is within of the population mean 4. 2. For many important processes that occur in the body, direct measurement of characteristics of the process is not possible. In many cases, however, we can measure a biomarker, a biochemical substance that is relatively easy to measure and is associated with the process of interest. Bone turnover is the net effect of two processes: the breaking down of old bone, called resorption, and the building of new bone, called formation. One biochemical measure of bone resorption is tartrate resistant acid phosphatase (TRAP), which can be measured in blood. In a study of bone turnove n young women, serum TRAP was measured in 31 subjects. The units are units per liter (U/I). The mean was 13.2 U/I Assume that the standard deviation is known to be 6.5 U/l. Find the margin of error and give a 95% confidence interval for the mean for young women represented by this sample: 12.54,13.86 U/l 2.79, 13.61 U/ (10.91,15.49) UVI 11,56,14 84 U/IExplanation / Answer
For 95 confidence level, z= 1.96
Hence, answer is z*2.40/Sqrt(36) = 1.96 * 2.4/6 = 1.96 * 0.4 = 0.784
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