Mathematics, 10.01.2020 07:31 linnybear300
Researcher found that fifth-grade students completed more mathematics problems correctly when simple problems were mixed in with their regular math assignments. in order to test this hypothesis, a researcher selects a standardized mathematics achievement test that produces a normal distribution of scores with a mean of μ = 100 and standard deviation of σ =18. the researcher modifies the test by inserting a set of very easy problems among the standardized questions, and gives the modified test to a sample of n = 36 students. if the average test score for the sample is m = 104, (use α = .01), figure the 99% of confidence interval (do not need to conduct a hypothesis test)
Answers: 2
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Mathematics, 22.06.2019 01:50
If its non of them tell me..valerie took a day-trip. she drove from her house for a while and took a coffee break. after her coffee break, she continued driving. after 2 hours of driving after her coffee break, her distance from her house was 210 miles. her average speed during the whole trip was 60 miles per hour.valerie created the equation y−210=60(x−2) to represent this situation, where xx represents the time in hours from her coffee break and yy represents the distance in miles from her house.which graph correctly represents valerie's distance from her house after her coffee break?
Answers: 1
Researcher found that fifth-grade students completed more mathematics problems correctly when simple...
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