Mathematics, 14.12.2019 05:31 oliviac0327
To obtain an estimate of the proportion of "full time" university students who have a part time job in excess of 30 hours per week, the student union decides to interview a random sample of full time students. they want the length of their 90% confidence interval to be no greater than 0.2 with standard deviation is known to be 3 hours. what size of the sample, n should be taken? round up your answer to the nearest whole number.
Answers: 2
Mathematics, 21.06.2019 16:50
Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.
Answers: 2
Mathematics, 22.06.2019 01:00
X^2/100+y^2/25=1 the y-intercepts are at: a) (-10,0) and (10,0) b) (0,10) and (0,5) c) (0,-5) and (0,5)
Answers: 1
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