Mathematics, 17.06.2020 03:57, jeffro198004
In a recent survey of 200 elementary students, many revealed they preferred math than English. Suppose that 80 of the students surveyed were girls and that 120 of them were boys. In the survey, 60 of the girls, and 80 of the boys said that they preferred math more.
Required:
a. Calculate an 80% confidence interval for the difference in proportions.
b. What is the standard error of the difference in the probability between that girls prefer math more and boys prefer math more?
1. 0.4097
2. 0.0042
3. 0.0833
4. 0.0647734
c. What is the difference in the probability between that girls prefer math more and boys prefer math more?
1. 0.0833
2. 0.5
3. 0.0042
4. 0.4097
Answers: 2
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