Mathematics, 15.04.2020 20:12, dondre54
There are many ways to measure the reading ability of children. Research designed to improve reading performance is dependent on good measures of the outcome. One frequently used test is the DRP or Degree of Reading Power. A researcher suspects that the mean score Āµ of all third graders in Henrico County Schools is different from the national mean, which is 32. To test her suspicion, she administers the DRP to an SRS of 44 Henrico County third-grade students and the standard deviation of scores in Henrico County Schools is known to be Ļ = 11 Their scores were: 40 26 39 14 42 18 25 43 46 27 19 47 19 26 35 34 15 44 40 38 31 46 52 25 35 35 33 29 34 41 49 28 42 47 35 48 22 33 41 51 27 14 54 45
a. Construct a 90% confidence interval to estimate the mean DRP score in Henrico County Schools.
b. Use the confidence interval you constructed in part (a) to comment on whether you agree with the researcherās claim. Explain your reasoning clearly.
Answers: 1
Mathematics, 21.06.2019 21:30, kimryan520
The ratios of boys to girls on a soccer league is 2: 5. if there are 28 boys, how many girls are playing soccer? extra points! will mark as brainiest asap
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Mathematics, 22.06.2019 02:30, rileyeddins1010
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Mathematics, 22.06.2019 03:00, cerna
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There are many ways to measure the reading ability of children. Research designed to improve reading...
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