Mathematics, 05.08.2020 18:01 lunamoon1
The proportion of students who own a cell phone on college campuses across the country has increased tremendously over the past few years. It is estimated that approximately 90% of students now own a cell phone. Fifteen students are to be selected at random from a large university. Assume that the proportion of students who own a cell phone at this university is the same as nationwide. Let X = the number of students in the sample of 15 who own a cell phone. What is the appropriate distribution of X? Select one:
a. X is Bin(15, 13.5)
b. X is Bin(15, 0.9)
c. X is N(15, 0.9)
d. X is N(13.5, 1.16)
Answers: 1
Mathematics, 21.06.2019 15:20
Which equation represents a circle with a center at (–3, –5) and a radius of 6 units? (x – 3)2 + (y – 5)2 = 6 (x – 3)2 + (y – 5)2 = 36 (x + 3)2 + (y + 5)2 = 6 (x + 3)2 + (y + 5)2 = 36
Answers: 3
Mathematics, 22.06.2019 05:30
The trapezoid below has been enlarged by a scale of 1.5. what is the area of the enlarged trapezoid?
Answers: 3
The proportion of students who own a cell phone on college campuses across the country has increased...
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