Mathematics, 21.04.2021 18:10 kids2006
A social worker at a large high school wants to estimate the number of days students are absent. He randomly
selects 45 students and records the number of days each one is absent. The social worker constructs a 95%
confidence interval for the true mean number of days students at this school are absent. Which of the following
would decrease the margin of error?
ОООО
using a sample of size 30
using a sample of size 40
constructing a 90% confidence interval
constructing a 99% confidence interval
Answers: 1
Mathematics, 21.06.2019 16:00
Afurniture manufacturer produces chairs and sofas. each chair requires 10 yards of fabric, and each sofa requires 20 yards of fabric. the manufacturer has 300 yards of fabric available. to fulfill orders, the number of sofas must be at least twice the number of chairs. let x be the number of chairs and y the number of sofas. which inequalities are described in the problem? check all of the boxes that apply
Answers: 2
Mathematics, 21.06.2019 20:40
The acceleration of an object due to gravity is 32 feet per second squared.what is acceleration due to gravity in inches per second squared?
Answers: 2
A social worker at a large high school wants to estimate the number of days students are absent. He...
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