1. The average life expectancy of tires produced by the Whitney Tire Company has been 40,000...
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1. The average life expectancy of tires produced by the Whitney Tire Company has been 40,000 miles. Management believes that due to a new production process, the life expectancy of its tires has increased. In order to test the validity of this belief, the correct set of hypotheses is a. Ho: 0< 40,000 Ha:0 2 40,000 b. Họ: 0s 40,000 H:0> 40,000 c. Ho: 0>40,000 Ha: 0S 40,000 d. Ho: 0 2 40,000 H: 0< 40,000 2. A soft drink filling machine, when in perfect adjustment, fills the bottles with 12 ounces of soft drink. Any overfilling or underfilling results in the shutdown and readjustment of the machine. To determine whether or not the machine is properly adjusted, the correct set of hypotheses is a. Họ: 0< 12 Hạ:0 < 12 b. Ho: 0 s 12 Ha: 0 > 12 c. Ho: 0 = 12 Ha: 0 = 12 d. Ho: 0 = 12 Hạ: 0 * 12 3. In the past, 75% of the tourists who visited Chattanooga went to see Rock City. The management of Rock City recently undertook an extensive promotional campaign. They are interested in determining whether the promotional campaign actually increased the proportion of tourists visiting Rock City. The correct set of hypotheses is a. Ho: p>0.75 Ha: ps 0.75 b. Họ: p< 0.75 Ha: p 2 0.75 c. Ho: p 2 0.75 Ha: p< 0.75 d. Ho: p s 0.75 Ha: p> 0.75 1. The average life expectancy of tires produced by the Whitney Tire Company has been 40,000 miles. Management believes that due to a new production process, the life expectancy of its tires has increased. In order to test the validity of this belief, the correct set of hypotheses is a. Ho: 0< 40,000 Ha:0 2 40,000 b. Họ: 0s 40,000 H:0> 40,000 c. Ho: 0>40,000 Ha: 0S 40,000 d. Ho: 0 2 40,000 H: 0< 40,000 2. A soft drink filling machine, when in perfect adjustment, fills the bottles with 12 ounces of soft drink. Any overfilling or underfilling results in the shutdown and readjustment of the machine. To determine whether or not the machine is properly adjusted, the correct set of hypotheses is a. Họ: 0< 12 Hạ:0 < 12 b. Ho: 0 s 12 Ha: 0 > 12 c. Ho: 0 = 12 Ha: 0 = 12 d. Ho: 0 = 12 Hạ: 0 * 12 3. In the past, 75% of the tourists who visited Chattanooga went to see Rock City. The management of Rock City recently undertook an extensive promotional campaign. They are interested in determining whether the promotional campaign actually increased the proportion of tourists visiting Rock City. The correct set of hypotheses is a. Ho: p>0.75 Ha: ps 0.75 b. Họ: p< 0.75 Ha: p 2 0.75 c. Ho: p 2 0.75 Ha: p< 0.75 d. Ho: p s 0.75 Ha: p> 0.75
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