child health and development studies (chds) has been collecting data about expectant mothers in oakland, ca since 1959. one of the measurements taken by chds is the age of first time expectant mothers. suppose that chds finds the average age for a first time mother is 26 years old. suppose also that, in 2015, a random sample of 50 expectant mothers have mean age of 26.5 years old, with a standard deviation of 1.9 years. at the 5% significance level, we conduct a one-sided t-test to see if the mean age in 2015 is significantly greater than 26 years old. statistical software tells us that the p-value = 0.034.
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SAT, 23.06.2019 18:30
Felipe is saving money for a class trip. he already has saved $ 2 5 0 $250 that he will put toward the trip. to save more money for the trip, felipe gets a job where each month he can add $ 3 5 0 $350 to his savings for the trip. let m m be the number of months that felipe has worked at his new job. if felipe needs to save $ 2 7 0 0 $2700 to go on the trip, which equation best models the situation?
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Essay questions may also be referred to as a. talk questions c. hard questions b. explain questions d. think questions
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Abox contains 40 number tiles numbered 1 to 40. if a tile is drawn at random, what is the probability that the number drawn is a multiple of 3 or 4? find p(multiple of 4 or multiple of 5)
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child health and development studies (chds) has been collecting data about expectant mothers in oakl...
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