Mathematics

Mathematics, 19.09.2019 20:00, destinyycooper

Suppose that a researcher is interested in the average standardized test score for fifth graders in a local school district. the fifth graders at a specific school would comprise a and their average test score would be a

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Mathematics, 05.08.2019 18:20, lizzie3545

Arandom sample of 64 second-graders in a certain school district are given a standardized mathematics skills test. the sample mean score is 51.48 . assume the standard deviation for the population of test scores is 15. the nationwide average score on this test is 50. the school superintendent wants to know whether the second-graders in her school district have greater math skills than the nationwide average. perform the hypothesis test and compute the p-value?

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Mathematics, 26.08.2019 16:10, robert7248

Aschool counselor tests whether the level of depression in fourth graders in a particular class of 20 students differs from that of fourth graders in general at her school. on the test, a score of 10 indicates severe depression, while a score of 0 indicates no depression. reports on past testing indicate that fourth graders at her school usually score 5 on the scale, but the variation is not known. her sample of 20 fourth graders has a mean depression score of 4.4. the counselor tests the null hypothesis that fourth graders in this class do not differ from fourth graders in general at the school in level of depression. she calculated a t score of -.20. using the .05 significance level, what decision should she make regarding the null hypothesis?

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Mathematics, 02.10.2019 03:00, lashondrascott

In a city with three high schools, all the ninth graders took a standardized test, with these results: high scool mean score test number of ninth gradeglenwood 79 285central city 94 336lincoln high 72 191the city's pr manager, who never took statistics, claimed the mean score of all ninth graders in the city was 81.7 . of course, that is incorrect. what is the mean score for all ninth graders in the city? use excel. round your answer to one decimal place.

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Mathematics, 24.10.2019 17:43, ashhleyjohnson

In a city with three high schools, all the ninth graders took a standardized test, with these results: high scool mean score test number of ninth gradeglenwood 79 285central city 94 336lincoln high 72 191the city's pr manager, who never took statistics, claimed the mean score of all ninth graders in the city was 81.7 . of course, that is incorrect. what is the mean score for all ninth graders in the city? use excel. round your answer to one decimal place.

Answers: 2

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