Mathematics, 11.03.2021 06:40 najsha
300 high school students were asked how many hours of TV they watch per day. The mean was 2 hours, with a standard deviation of 0.5. Using a 90% confidence level, calculate the maximum error of estimate.
0.27%
5.66%
7.43%
4.75%
Answers: 3
Mathematics, 21.06.2019 18:00, rawaanasser12245
Pat listed all the numbers that have 15 as a multiple write the numbers in pats list
Answers: 2
Mathematics, 21.06.2019 18:00, milagrosee12
Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.
Answers: 3
Mathematics, 21.06.2019 19:00, ale1910
Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?
Answers: 3
Mathematics, 21.06.2019 19:10, bleesedbeme
What is the total surface area of this square pyramid?
Answers: 2
300 high school students were asked how many hours of TV they watch per day. The mean was 2 hours, w...
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