Mathematics, 05.05.2020 09:14, cerlos110484
An environmentalist would like to compare air pollution levels in cities A and B. From each city 10 measurements are taken. For city A, the average of all measurements (where measurements are percentage of pollutants in the air) is 5 percent with sample standard deviation 1.5 percent. For city B the average of all 10 measurements is 5.4 percent with sample standard deviation 2 percent. Assume that for each city air pollution level at a random time and location follows a normal distribution, and nd a 90% confidence interval for difference between the true average air pollution levels of city A and city B.
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Mathematics, 21.06.2019 17:50, aaroncx4900
Jace wrote a sentence as an equation. 56 is 14 more than a number. 14+ = 56 which statement best describes jace's work? jace is not correct. the phrase more than suggests using the symbol > and jace did not use that symbol. jace is not correct. he was correct to use addition, but the equation should be 56+ p = 14 jace is not correct. the first number in the sentence is 56, so the equation should start with 56. jace is correct. the phrase more than suggests addition, so jace showed that 14 plus a variable equals 56. o
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Mathematics, 21.06.2019 20:00, andrejr0330jr
I’m stuck on this equation, anyone got the answer?
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Mathematics, 21.06.2019 21:00, kharmaculpepper
Joanie watched 1 out of three of a movie in the morning
Answers: 1
An environmentalist would like to compare air pollution levels in cities A and B. From each city 10...
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