Mathematics, 18.02.2020 00:34, mariahbrooks
A library wants to determine the effectiveness of their summer literacy program among low-income children. Because surveying the large numbers of students in the program would require too many resources the library staff interviews 30 randomly chosen children among the low-income program attendees. The 30 sampled children are given a reading test before and after the program. A) The difference in the reading test scores (after โ before) has mean 10 and standard deviation 4. Assuming the score differences are normally distributed, what percent of the children showed any improvement (difference > 0) in reading ability?B) What percent of children improved by more than 15 points?
Answers: 1
Mathematics, 21.06.2019 16:00, bryce12351
An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is
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Mathematics, 21.06.2019 23:30, kelyanthecrafte
Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)
Answers: 1
A library wants to determine the effectiveness of their summer literacy program among low-income chi...
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