STAT 302 Midterm: STAT 302 UW Madison Solutions 04
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In a recent poll of 1000 american adults, the number saying that exercise is an important part of daily life was 753. Use statkey or other technology to nd and interpret at 90% con dence interval for the proportion of american adults who think exercise is an important part of daily life. Using statkey or other technology, we produce a bootstrap distribution such as the gure shown below. For a 90% con dence interval, we nd the 5%-tile and 95%-tile points in this distribution to be 0. 730 and 0. 774. We are 90% con dent that the percent of american adults who think exercise is an important part of daily life is between 73. 0% and 77. 4%. 3. 104 comparing methods for having dogs identify cancer in people exercise 2. 17 on page 55 describes a study in which scientists train dogs to smell cancer. Researchers collected breath and stool samples from patients with cancer as well as from healthy people.
