Mathematics, 05.05.2020 07:59 Rubendelarosa1529
College Students and Drinking Habits: A public health official is studying differences in drinking habits among students at two different universities. They collect a random sample of students independently from each of the two universities and ask each student how many alcoholic drinks they consumed in the previous week. Sample Statistics Size (n) Mean (x ¯) Std. Dev. (s) Sample 1 40 6.9 2.3 Sample 2 49 5.7 1.9 The standard error resulting from these samples is 0.45 and df = 75. The official conducts a two-sample t-test to determine whether this sample provides significant evidence that students at University 1 drink more than students at University 2. The test statistic is t = 2.64 with a P-value 0.005. Which of the following is an appropriate conclusion? Group of answer choices The samples do not provide statistically significant evidence. We cannot use the t-test in this case because the variables (number of drinks) are likely skewed to the right at each university. The samples provide significant evidence that students at University 1 drink more than students at University 2.
Answers: 3
Mathematics, 21.06.2019 18:30
Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?
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The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?
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Mathematics, 21.06.2019 22:30
Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.
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College Students and Drinking Habits: A public health official is studying differences in drinking h...
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