A schoolteacher is concerned that her students watch more TV than the average Am
ID: 3356960 • Letter: A
Question
A schoolteacher is concerned that her students watch more TV than the average American child. She reads that according to the American Academy of Pediatrics (AAP), the average American child watches 4 hours of TV per day ( = 4.0 hours). She records the number of hours of TV each of her six students watch per day. The times (in hours) are 5.5, 4.0, 4.4, 4.8, 2.8, and 2.5.
Test the hypothesis that her students watch more TV than the average American child using a 0.05 level of significance and a one-independent sample t-test. State the value of the test statistic. (Round your answer to three decimal places.)
State the decision to retain or reject the null hypothesis.
Compute effect size using estimated Cohen's d. (Round your answer to two decimal places.)
Explanation / Answer
The statistical software output for this problem is:
One sample T hypothesis test:
: Mean of variable
H0 : = 4
HA : > 4
Hypothesis test results:
Hence,
Test statistic = 0
Decision: Retain the null hypothesis.
Cohen's d = 4/1.161 = 3.45
Variable Sample Mean Std. Err. DF T-Stat P-value Data 4 0.47399015 5 0 0.5Related Questions
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