3) Within a school district, students were randomly assigned to one of two Math teachers β Mrs. Smith and Mrs. Jones. After the assignment, Mrs. Smith had 30 students, and Mrs. Jones had 25 students.
At the end of the year, each class took the same standardized test. Mrs. Smith's students had an average test score of 78, with a standard deviation of 10; and Mrs. Jones' students had an average test score of 85, with a standard deviation of 15.
Test the hypothesis that Mrs. Smith and Mrs. Jones are equally effective teachers. Use a 0.10 level of significance.
Answers: 3
SAT, 27.06.2019 08:30
Ahands-free device may only be used if it can be activated or deactivated with a
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Use the series of plates supplied with your study unit to answer this question: how many two-pole 30-a breakers are installed in panel pp1? a. four b. two c. eight d. nine can i get an answer for this question?
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SAT, 29.06.2019 14:00
Ten students compared the amount (in dollars) they spent on books each week. the box plot shows the results. the median amout they spent each week is . the difference of the first and third quartiles of the data set is?
Answers: 1
3) Within a school district, students were randomly assigned to one of two Math teachers β Mrs. Smit...
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