In a study of the effectiveness of physical exercise in weight reduction, a group of 12 persons participate in a prescribed program of physical exercise for one month showed in Table 6. Use the 0.01 level of significance to test whether the prescribed program of exercise is effective. weight before(kg) 95 81 76 96 82 87 71 82 77 83 81 65 weight after(kg) 89 77 77 94 80 86 72 82 74 81 78 63
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In a study of the effectiveness of physical exercise in weight reduction, a group of 12 persons
participate in a prescribed program of physical exercise for one month showed in Table 6. Use
the 0.01 level of significance to test whether the prescribed program of exercise is effective.
weight before(kg) | 95 | 81 | 76 | 96 | 82 | 87 | 71 | 82 | 77 | 83 | 81 | 65 | |
weight after(kg) | 89 | 77 | 77 | 94 | 80 | 86 | 72 | 82 | 74 | 81 | 78 | 63 |
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- Among the literature on quitting smoking are data detailing the relative successfulness of people of different ages in quitting smoking. A study of 400 adults who began various smoking-cessation programs produced the data in the table below. In the table, each participant is classified according to two variables: length of their smoking cessation period ("Less than two weeks", "Between two weeks and one year", or "At least one year") and age ("21-34", or "35 and over"). In the table, "less than two weeks" means that the individual returned to smoking within two weeks of beginning the program; "between two weeks and one year" means that the individual lasted the first two weeks without smoking but retuned to smoking within a year; and "at least one year" means that the individual has not smoked for at least a year since beginning the program. The table is a contingency table whose cells contain the respective observed frequencies of classifications of the 400 smokers. In addition, three…1. Determine whether the given is a mutually or not mutually exclusive events. PROBLEM 1. A = {a, b, c, d} and B = {vowels} %3D %3D 2. A = {1,2,3,4,5} and B = {even numbers} %3D 3. rolling a die and tossing a coin 4. selecting a male student and a Grade 10 student 5. getting a red or a heart from a deck of 52 cards.5. An article in Agricultural Engineering (December 1964, pp. 672-673) described an experiment in which the daily weight gain of swine is evaluated at different levels of housing temperature. The mean weight of each group of swine at the start of the experiment is considered to be a nuisance factor. The data from this experiment are as follows: Mean Weight (lbs) Housing Air Temperatures (°F) 100 50 60 70 80 90 1.37 1.58 2.00 1.97 1.40 100 0.39 150 1.47 1.75 2.16 1.82 1.14 -0.19 200 1.19 1.91 2.22 1.67 0.88 -0.77 Does housing air temperature affect mean weight gain at a = 0.05?