Mathematics, 02.10.2019 14:30 paige1616
John is creating a display at the store where he works, using only canned pumpkin and canned green beans. he needs to maintain a ratio of pumpkin to green beans of 5 to 2. if he wants to use a total of 140 cans, how many cans of green beans should he use? a. 38 cans b. 40 cans c. 22 cans d. 7 cans
Answers: 1
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What is the perimeter of square abcd? units units 28 units 37 units
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Mathematics, 21.06.2019 17:30
Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?
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Mathematics, 22.06.2019 04:30
The survey of study habits and attitudes (ssha) is a psychological test that measures the motivation, attitude toward school, and study habits of students, scores range from 0 to 200. the mean score for u.s. college students is about 115, and the standard deviation is about 30. a teacher who suspects that older students have better attitudes toward school gives the ssha to 55 students who are at least 30 years of age. the mean score is 113.2. assume the population standard deviation is 30 for older students what is the margin of error for a 95% confidence interval for the population mean score for a. older students? b. compute the 95% confidence interval for the population mean score for older students. c. compute the 99% confidence interval for the population mean score for older students. d. compute the 88% confidence interval for the population mean score for older students.
Answers: 3
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