a. Hypotheses b. Alpha c. Degrees of Freedom write NA if there's none) d. Critical Value

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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16-25. In the population, the average IQ is 100. A team of researchers wants to test a new learning
strategy to see if it has either a positive or negative effect on intelligence, or no effect at all. A sample of
30 participants were chosen to use it. After a year of application, their mean intelligence measures 140
with a standard deviation of 20. With 95% confidence level, did the learning strategy affect intelligence?
a. Hypotheses
b. Alpha
c. Degrees of Freedom
(write NA if there's none)
d. Critical Value
e. Computed Statistics
f. Decision and Conclusion
Transcribed Image Text:16-25. In the population, the average IQ is 100. A team of researchers wants to test a new learning strategy to see if it has either a positive or negative effect on intelligence, or no effect at all. A sample of 30 participants were chosen to use it. After a year of application, their mean intelligence measures 140 with a standard deviation of 20. With 95% confidence level, did the learning strategy affect intelligence? a. Hypotheses b. Alpha c. Degrees of Freedom (write NA if there's none) d. Critical Value e. Computed Statistics f. Decision and Conclusion
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