Question

Problem: The following data represent glacose blood levels (mg/100 ml) after a 12 hour fast for a random sample of 70 women (Reference: American Journal of Clinical Nutrition, Vol. 19, pp. 315-351). 45 66 83 71 76 64 59 59 76 82 80 81 85 77 82 90 87 72 79 6 8371 87 817696836794 101 9 9 94 73 99 93 85 83S 78 S0 85 83 84 74 81 70 6 89 70 80 84 77 65 46 8 70 75 4 101 71 109 73 73 80 72 81 63 7 1. Find the mean and standard deviation of the sample 2. If you last digit of your student ID ί, even, divide the data into ElGHT claws. Calculate the frequencis and relative frequencies If you last digit of your student ID is odd, divide the data into NINE classes. Caleulate the frequeacies and relative frequencies. You must write the class width clearly in your project 3. Draw the histogram based on last step 4-This problem is a discrete distribution of data, when data is many enough, we can use a continuous distribution to approximate it. Suppose we can do so in this problem, can we use a normal distribution to approximate it based on the histogrm obtained in last step? Why? 5. Suppose we can use a normal distribution to apprimate it. Based on the mean and standard deviation obtained in the finst step, what is the probability that a randoenly selected women has a blood level between 70 and 80? (Be carefull Use the technique you learned from Section 66) 6. Use the relative frequency of data between 70 and 80 to compare with the probability in last step. What is your result? Are they same? Why

Answer 1

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