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How many miles, to the nearest mile, does the second hand on the clock above travel in 7 days?
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An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.
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Ascientific blank must be testable and capable of being proven false?
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The ph is the a.independent variable b.the dependent variable c.control group
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Which type of energy would have nothing to do with ironing clothes? a. heat b. chemical c. electrical d. mechanical
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How many miles, to the nearest mile, does the second hand on the clock above travel in 7 days?...
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