Mathematics, 20.12.2019 23:31 mirmir62
An automobile engineer would like to test his newly invented anti-lock braking system. specifically, he would like to calculate the average number of feet it takes the brakes to stop a car going 50 miles per hour. the engineer took a sample of 6 cars and from this sample calculated a mean stopping distance of 15 feet with a standard deviation of 2.28 feet. assuming stopping distances are normally distributed, what is the 80% confidence interval for the population mean?
Answers: 3
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Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.
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Mathematics, 21.06.2019 21:30
Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?
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Mathematics, 21.06.2019 21:30
The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse
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Mathematics, 21.06.2019 23:50
Which of the following are independent events? a) knowing that it is going to rain tomorrow, and bringing an umbrella to schoolb) knowing that you have to get up early tomorrow, and going to bed before 9 p.mc) knowing that it is going to rain tomorrow, and going to bed before 9 p.md) knowing that you have a test in school tomorrow, and studying thw night before
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An automobile engineer would like to test his newly invented anti-lock braking system. specifically,...
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