Mathematics, 20.12.2019 19:31, layla07
University personnel are concerned about the sleeping habits of students and the negative impact on academic performance. in a random sample of 377 u. s. college students, 209 students reported experiencing excessive daytime sleepiness (eds).
a. is there sufficient evidence to conclude that more than half of u. s. college students experience eds? use a 5% level of significance.
b. what is a 90% confidence interval estimate for the proportion of all of u. s. college students who experience excessive daytime sleepiness?
Answers: 3
Mathematics, 21.06.2019 15:30, squawk1738
Given the box plot, will the mean or the median provide a better description of the center? box plot with min at 10.5, q1 at 11.5, median at 12.5, q3 at 13.5, max at 15
Answers: 2
Mathematics, 21.06.2019 22:30, jadeochoa4466
Aflagpole broke in a storm. it was originally 8 1 81 feet tall. 2 8 28 feet are still sticking straight out of the ground, where it snapped, but the remaining piece has hinged over and touches the ground some distance away. how far away is the end of the pole from the base of the pole along the ground?
Answers: 1
Mathematics, 21.06.2019 23:30, shadowz8813
Johnny rode his bike to a friends house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was unable to play. what was his displacement for the total bike ride trip? what could you use as a reference point ? show the steps to solve this problem.
Answers: 3
Mathematics, 22.06.2019 00:30, kelseeygee
What is the value of the discrimination for the quadratic equation 0=×2+2+×2
Answers: 2
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